List of Pennsylvania state historical markers in Allegheny County facts for kids

Location of Allegheny County in Pennsylvania

This is a list of the Pennsylvania state historical markers in Allegheny County.

This is intended to be a complete list of the official state historical markers placed in Allegheny County, Pennsylvania by the Pennsylvania Historical and Museum Commission (PHMC). The locations of the historical markers, as well as the latitude and longitude coordinates as provided by the PHMC's database, are included below when available. There are currently 148 historical markers located in Allegheny County.

Historical markers

Marker title	Image	Date dedicated	Location	Marker type	Topics
1909 McKee's Rocks Strike		October 14, 2000	812 Island Avenue at McKees Rocks Bridge, Stowe Township 40.47372°N 80.06258°W / 40.47372; -80.06258 (1909 McKee's Rocks Strike)	Roadside	Labor
1st Drive-In Filling Station		July 11, 2000	Near intersection of Baum Boulevard & St. Clair Streets, East Liberty/Friendship (Pittsburgh) 40.45934°N 79.93066°W / 40.45934; -79.93066 (1st Drive-In Filling Station)	City	Business & Industry, Oil & Gas, Transportation
Allegheny Arsenal		June 1, 1967	40th Street near Davidson at Arsenal Park, opposite #257, Lawrenceville 40.46719°N 79.9605°W / 40.46719; -79.9605 (Allegheny Arsenal)	City	Civil War, French & Indian War, Military
Allegheny Cotton Mill Strikes		October 1, 2007	Allegheny Landing, near Allegheny River between Roberto Clemente (6th Street) & Andy Warhol (7th Street) Bridges, North Shore (Pittsburgh) 40.44706°N 80.00258°W / 40.44706; -80.00258 (Allegheny Cotton Mill Strikes)	City	Government & Politics 19th Century, Labor, Mills
Allegheny County		December 30, 1982	County Courthouse (courtyard), Grant Street between 5th & Forbes Avenues, Pittsburgh 40.438673°N 79.996396°W / 40.438673; -79.996396 (Allegheny County)	City	Business & Industry, Government & Politics, Government & Politics 18th Century, Iron, Steel
Allegheny Observatory		November 2, 1979	Riverview Avenue in Riverview Park (off US 19) near Observatory, Observatory Hill, Pittsburgh 40.48274°N 80.01831°W / 40.48274; -80.01831 (Allegheny Observatory)	City	Education, Medicine & Science, Transportation
Andrew Carnegie (1835-1919)		April 18, 1996	Carnegie Museum of Natural History, 4400 Forbes Avenue (Schenley Drive Extension), Oakland (Pittsburgh) 40.44277°N 79.95168°W / 40.44277; -79.95168 (Andrew Carnegie)	City	Business & Industry, Education, Ethnic & Immigration, Professions & Vocations, Steel
Art Blakey (1919-1990)		August 26, 2007	617 Chauncey Street, Hill District (Pittsburgh) 40.4479°N 79.97358°W / 40.4479; -79.97358 (Art Blakey)	City	African American, Music & Theater, Performers
Arthur J. Rooney (1901-1988)		June 3, 2005	Tourman Street & Coulterville Road, Coulter 40.295967°N 79.799300°W / 40.295967; -79.799300 (Arthur J. Rooney)	Roadside	Ethnic & Immigration, Football, Sports
August Wilson (1945-2005)		May 30, 2007	1727 Bedford Ave., Hill District (Pittsburgh) 40.44521°N 79.98542°W / 40.44521; -79.98542 (August Wilson)	Roadside	African American, Music & Theater, Writers
Avery College		January 1, 1968	621 East Ohio Street, North Side (Pittsburgh) 40.453833°N 79.998363°W / 40.453833; -79.998363 (Avery College)	City	African American, Education, Religion
Barney Dreyfuss (1865-1932)		June 30, 2005	Posvar Hall, Roberto Clemente & Schenley Drives, University of Pittsburgh, Oakland section 40.4416°N 79.95296°W / 40.4416; -79.95296 (Barney Dreyfuss)	City	Baseball, Entrepreneurs, Sports
Bethel A.M.E. Church		September 24, 1995	405 1st Avenue, at Smithfield Street, Pittsburgh 40.43716°N 80.0005°W / 40.43716; -80.0005 (Bethel A.M.E. Church)	City	African American, Civil Rights, Education, Religion
Bethel Presbyterian Church		August 21, 1951	2999 Bethel Church Road between PA 88 & US 19, Bethel Park 40.336476°N 80.047926°W / 40.336476; -80.047926 (Bethel Presbyterian Church)	Roadside	Buildings, Education, Religion
Billy Eckstine (1914-1993)		July 31, 1994	5917 Bryant Street, Highland Park (Pittsburgh) 40.475567°N 79.919250°W / 40.475567; -79.919250 (Billy Eckstine)	City	African American, Performers
Bost Building		July 7, 1992	617-623 East 8th Avenue near Heisel Street, Homestead 40.409039°N 79.904394°W / 40.409039; -79.904394 (Bost Building)	City	Buildings, Iron, Labor, Publishing, Steel
Bouquet Camp		December 21, 1946	Saltsburg Road (PA 380) & Frankstown Avenue (Petermans Corner), Penn Hills Twp 40.48414°N 79.81905°W / 40.48414; -79.81905 (Bouquet Camp)	Roadside	Forts, French & Indian War, Military, Roads
Bower Hill		August 23, 1996	292 Kane Boulevard, Scott Twp., NE of Bridgeville 40.37434°N 80.08614°W / 40.37434; -80.08614 (Bower Hill)	Roadside	African American, American Revolution, George Washington, Mansions & Manors, Military, Whiskey Rebellion
Braddock's Crossing		August 24, 1964	Hoffman & Kennywood (PA 837) Boulevards at Kennywood Park, West Mifflin 40.38524°N 79.86292°W / 40.38524; -79.86292 (Braddock's Crossing)	Roadside	French & Indian War, Military, Native American
Braddock's Defeat		February 28, 1948	549 Jones Avenue, Washington Statue Park, Braddock 40.40296°N 79.86343°W / 40.40296; -79.86343 (Braddock's Defeat)	Roadside	Forts, French & Indian War, Military, Native American
Braddock's Defeat		February 28, 1948	US 30, north side, S of I-376 exit 10, Forest Hills (Missing)	Roadside	French & Indian War, Military, Native American
Braddock's Field		September 12, 1994	549 Jones Avenue, Washington Statue Park, Braddock 40.403006°N 79.863265°W / 40.403006; -79.863265 (Braddock's Field)	Roadside	Government & Politics, Military, Whiskey Rebellion
Carnegie Hero Fund Commission		1995	301 Pittsburgh Street (SR 1001, old PA 28), across from Washington Street, Springdale 40.54106°N 79.79061°W / 40.54106; -79.79061 (Carnegie Hero Fund Commission)	Roadside	Business & Industry
Carnegie Library of Homestead Swim Team		August 14, 2004	Homestead Library, 510 East 10th Avenue, Munhall 40.40733°N 79.90314°W / 40.40733; -79.90314 (Carnegie Library of Homestead Swim Team)	City	Sports, Women
Charles Martin Hall (1863-1914)		March 1, 1998	3200 Smallman St., Pittsburgh 40.461581°N 79.9707°W / 40.461581; -79.9707 (Charles Martin Hall)	City	Business & Industry, Electricity, Entrepreneurs, Invention
Charles Taze Russell (1852-1916)		May 8, 2000	Allegheny Center, East Commons, at New Hazlett Theater (formerly Carnegie Hall), Pittsburgh 40.45274°N 80.00488°W / 40.45274; -80.00488 (Charles Taze Russell)	City	Buildings, Houses & Homesteads, Religion
Chartier's Town		December 19, 1946	PA 28 at Tarentum (Missing)	City	Business & Industry, Cities & Towns, Early Settlement, Native American
Clinton Furnace		September 2, 2004	Bessemer Court at Station Square, Pittsburgh 40.434284°N 80.004582°W / 40.434284; -80.004582 (Clinton Furnace)	Roadside	Business & Industry, Furnaces, Iron
Crawford Grill		April 7, 2001	Wylie Avenue at Elmore Street, Pittsburgh 40.445503°N 79.977943°W / 40.445503; -79.977943 (Crawford Grill)	City	African American, Music & Theater
Daisy E. Lampkin		August 8, 1993	2519 Webster Avenue at Watt Lane, Hill District (Pittsburgh) 40.44991°N 79.97201°W / 40.44991; -79.97201 (Daisy E. Lampkin)	City	African American, Government & Politics, Government & Politics 20th Century, Women
David L. Lawrence		February 28, 1985	Point State Park, Pittsburgh (Missing)	City	Government & Politics, Government & Politics 19th Century, Governors
Davis Island Lock & Dam		July 4, 1987	1050 Ohio River Blvd. (PA 65) at E borough line, at Eat 'n' Park, Avalon 40.494°N 80.06416°W / 40.494; -80.06416 (Davis Island Rock & Dam)	Roadside	Environment
Dravo Corporation Shipyard		August 18, 1995	5500 Grand Avenue, at Memorial Park, beside fire station, Neville Island 40.51182°N 80.12971°W / 40.51182; -80.12971 (Dravo Corporation Shipyard)	Roadside	Business & Industry, Entrepreneurs
Duquesne Steel Works		October 12, 1997	East Grant Avenue & Linden Street (PA 837), Duquesne 40.37407°N 79.84241°W / 40.37407; -79.84241 (Duquesne Steel Works)	City	Business & Industry, Entrepreneurs
Duquesne University		October 5, 1978	Bluff Street at University Administration Building, Pittsburgh 40.4355°N 79.99285°W / 40.4355; -79.99285 (Duquesne University)	City	Education, Ethnic & Immigration, Religion
Elizabeth		December 20, 1946	Between exit ramp of PA 51 and Elizabeth Bridge, Elizabeth 40.2724°N 79.88489°W / 40.2724; -79.88489 (Elizabeth)	Roadside	Business & Industry, Transportation
Ethelbert Nevin		May 7, 1948	Ohio River Boulevard (PA 65) at Edgeworth Lane, east side, Edgeworth 40.54917°N 80.19664°W / 40.54917; -80.19664 (Ethelbert Nevin)	Roadside	Music & Theater, Writers
Ethelbert Nevin		May 7, 1948	Ohio River Boulevard (PA 65), west side, at Edgeworth Lane (MISSING)	Roadside	Music & Theater
Ferris Wheel Inventor		1967	West Commons, Arch Street near South Diamond (MARKER NOT YET REINSTALLED)	City	George Washington, Invention, Professions & Vocations, Sports
First Aluminum Observatory Dome		June 27, 1998	Between West View Avenue & McKnight Road (Truck US 19), Ross Township 40.499846°N 80.012819°W / 40.499846; -80.012819 (First Aluminum Observatory Dome)	Roadside	Education, Environment, Invention, Medicine & Science
First Mining of Pittsburgh Coal		April 18, 1985	Grandview Avenue between Ulysses & Bertha Streets, Mt. Washington (Pittsburgh) 40.43438°N 80.01127°W / 40.43438; -80.01127 (First Mining of Pittsburgh Coal)	City	Business & Industry, Coal
First Professional Football Game		November 3, 1992	North Shore Drive & Art Rooney Drive, near Heinz Field, North Shore (Pittsburgh) 40.44546°N 80.0137°W / 40.44546; -80.0137 (First Professional Football Game)	Roadside	Football, Sports
First World Series		September 18, 1998	Riverwalk near PNC Park and the water steps, North Shore (Pittsburgh) 40.445401°N 80.009171°W / 40.445401; -80.009171 (First World Series)	Roadside	Baseball, Sports
Forbes Field		July 7, 2006	3950 Roberto Clemente Drive near South Bouquet Street, by remaining Forbes Field wall, Pitt campus, Oakland (Pittsburgh) 40.44146°N 79.95282°W / 40.44146; -79.95282 (Forbes Field)	Roadside	Baseball, Football, Sports
Forbes Road (Bouquet's Breastworks)		July 9, 1952	Old Frankstown Road, at Boyce Park Administration Building, Monroeville 40.45997°N 79.7528°W / 40.45997; -79.7528 (Forbes Road Bouquet's Breastworks)	Roadside	French & Indian War, Military
Forbes Road, 1758, Fort Bedford to Fort Duquesne - Fort Duquesne End (PLAQUE)		1930	Point State Park, between Fort Pitt Museum & Blockhouse, Pittsburgh 40.44109°N 80.00967°W / 40.44109; -80.00967 (Forbes Road, 1758, Fort Bedford to Fort Duquesne - Fort Duquesne End)	Plaque	Forts, French & Indian War, Military, Roads
Forbes Road, 1758, Fort Bedford to Fort Duquesne - The Bouquet Encampment (PLAQUE)		1930	PA 380 (Saltsburg & Frankstown Roads), Petermans Corner, Penn Hills Township 40.4842°N 79.81918°W / 40.4842; -79.81918 (Forbes Road, 1758, Fort Bedford to Fort Duquesne - The Bouquet Encampment)	Plaque	French & Indian War, Military, Roads
Fort Duquesne		May 8, 1959	Point State Park, main entrance at Commonwealth Place, Pittsburgh (MISSING)	City	Forts, French & Indian War, Military
Fort Lafayette		December 1, 1958	9th Street just north of Penn Avenue, Pittsburgh 40.4437°N 79.99834°W / 40.4437; -79.99834 (Fort Lafayette)	City	Forts, Military, Native American, War of 1812
Fort Pitt		May 8, 1959	Point State Park, main entrance Commonwealth Place, Pittsburgh (MISSING)	City	Forts, French & Indian War, Military
Fort Pitt Blockhouse		May 8, 1959	Point State Park, main entrance Commonwealth Place, Pittsburgh (MISSING)	City	Forts, French & Indian War, Military
Fort Prince George		May 8, 1959	Point State Park, main entrance Commonwealth Place, Pittsburgh (MISSING)	City	Forts, French & Indian War, George Washington, Military
Founding Convention of the AFL		September 24, 1997	Northwest corner of Mellon Park, between 5th & 6th Streets, opposite William Penn Hotel, Pittsburgh 40.4409°N 79.9975°W / 40.4409; -79.9975 (Founding Convention of the AFL)	City	Labor
Founding Convention of the CIO		September 23, 1997	North Commons Drive, at MLK Elementary, near Allegheny Center, Pittsburgh 40.45433°N 80.00448°W / 40.45433; -80.00448 (Founding Convention of the CIO)	City	Labor
Founding of Ironworkers Union		May 22, 1999	At Firstside Park, Grant Street, between Boulevard of the Allies and 1st Avenue, Pittsburgh 40.43665°N 79.99854°W / 40.43665; -79.99854 (Founding of Ironworkers Union)	City	Iron, Labor
Frances Perkins		October 4, 2003	Southwest corner of 9th Avenue & Amity Street, at police station, Homestead 40.40628°N 79.91019°W / 40.40628; -79.91019 (Frances Perkins)	City	Government & Politics 20th Century, Labor, Steel, Women
Frank Conrad (1874-1941)		December 1, 1990	PA 8 (Penn Avenue) & South Trenton Avenue, Wilkinsburg 40.445818°N 79.891436°W / 40.445818; -79.891436 (Frank Conrad)	City	Business & Industry, Entrepreneurs
Frank E. Bolden (1912-2003)		September 30, 2004	2621 Centre Avenue, across from YMCA, Hill District (Pittsburgh) 40.4468°N 79.96774°W / 40.4468; -79.96774 (Frank E. Bolden)	City	African American, Military Post-Civil War, Publishing, Writers
Frank Vittor (1888-1968)		October 12, 2008	At Columbus statue in Schenley Park, Schenley Drive & Frew Street Extension, Oakland (Pittsburgh) 40.440433°N 79.948300°W / 40.440433; -79.948300 (Frank Vittor)	Roadside	Artists, Ethnic & Immigration
Gen. Matthew B. Ridgway (1895-1993)		November 6, 1999	Fox Chapel High School, 611 Field Club Road, Fox Chapel 40.51775°N 79.86756°W / 40.51775; -79.86756 (Gen. Matthew B. Ridgway)	Roadside	Military, Military Post-Civil War
George Westinghouse		May 7, 1948	US 30 at west end of George Westinghouse Bridge over Turtle Creek, Turtle Creek 40.39487°N 79.83875°W / 40.39487; -79.83875 (George Westinghouse)	Roadside	Business & Industry, Electricity, Entrepreneurs, Invention
George Westinghouse		December 23, 1946	US 30 at east end of George Westinghouse Bridge over Turtle Creek, Turtle Creek (MISSING)	Roadside	Business & Industry, Electricity, Entrepreneurs, Invention
Great Steel Strike of 1919, The		September 23, 1994	Braddock Avenue at 14th Street, across from Edgar Thompson Works, Braddock 40.39852°N 79.8622°W / 40.39852; -79.8622 (Great Steel Strike of 1919, The)	City	Government & Politics, Labor, Steel
Greenlee Field		July 17, 2009	Bedford Avenue & Junilla Street, Hill District (Pittsburgh) 40.4506°N 79.973°W / 40.4506; -79.973 (Greenlee Field)	City	African American, Football, Sports
Hand's Hospital		December 24, 1946	PA 60 (West Steuben Street) at Linden Street, across from Crafton Park, Crafton 40.43913°N 80.07339°W / 40.43913; -80.07339 (Hand's Hospital)	Roadside	French & Indian War, Military
Heidelberg Raceway and Sports Arena		July 15, 2012	Washington Pike (PA 50), in front of King's Restaurant, Heidelberg 40.387450°N 80.091450°W / 40.387450; -80.091450 (Allegheny Cotton Mill Strikes)	City	Performers, Railroads, Sports & Recreation
Helen Richey (1909-1947)		October 1, 2002	Renzie Park, Eden Park Boulevard & Tulip Drive, McKeesport 40.34063°N 79.82724°W / 40.34063; -79.82724 (Helen Richey)	Roadside	Education, Military, Military Post-Civil War, Professions & Vocations, Transportation, Women
Henry Clay Frick (1848-1919)		December 10, 1946	Grant Street near 5th Avenue, in median at Frick Bldg., Pittsburgh 40.43928°N 79.996884°W / 40.43928; -79.996884 (Henry Clay Frick)	City	Business & Industry, Coal
Henry J. Heinz (1844-1919)		September 14, 1994	Chestnut & Progress Streets, North Side (Pittsburgh) 40.453317°N 79.992673°W / 40.453317; -79.992673 (Henry J. Heinz)	City	Business & Industry, Entrepreneurs
Homestead Grays, The		September 27, 2000	Amity Street at The Waterfront, at parking lot and railroad tracks, Homestead 40.409218°N 79.912121°W / 40.409218; -79.912121 (Homestead Grays)	Roadside	African American, Baseball, Sports
Homestead Strike		July 1, 1992	880 East Waterfront Drive, Munhall 40.41285°N 79.89711°W / 40.41285; -79.89711 (Homestead Strike)	City	Government & Politics, Labor
Homestead Strike Victims		July 11, 1993	At Cemetery, 102 East 22nd & Dewey Streets, Munhall 40.39762°N 79.9019°W / 40.39762; -79.9019 (Homestead Strike Victims)	Roadside	Labor
Honus Wagner (1874-1955)		August 29, 1998	Mansfield Boulevard & Chartiers Street, Carnegie 40.407281°N 80.088843°W / 40.407281; -80.088843 (Honus Wagner)	Roadside	Baseball, Ethnic & Immigration, Sports
James Hay Reed		December 1, 1958	Carnegie Science Center (south of North Commons), North Side (Pittsburgh) 40.45321°N 80.00587°W / 40.45321; -80.00587 (James Hay Reed)	City	Business & Industry, Professions & Vocations
Jane Grey Swisshelm		September 14, 1959	South Braddock Avenue & New Street, Edgewood, just north of I-376 exit 77 40.42867°N 79.89134°W / 40.42867; -79.89134 (Jane Grey Swisshelm)	Roadside	Civil Rights, Civil War, Medicine & Science, Women, Writers
Jane Holmes (1805-1885)		May 29, 2007	Western PA School for Blind Children, Bayard Street at North Bellefield Avenue, Schenley Farms (Pittsburgh) 40.44823°N 79.95295°W / 40.44823; -79.95295 (Jane Holmes)	City	Women
John A. Roebling (1806-1869)		1996	Smithfield Street Bridge, Station Square (Pittsburgh) 40.43335°N 80.00328°W / 40.43335; -80.00328 (John A. Roebling)	City	Bridges, Transportation
John M. Phillips (1861-1953)		October 31, 2009	St. Pius X Byzantine Catholic Church, 2336 Brownsville Road, Pittsburgh 40.3884°N 79.9852°W / 40.3884; -79.9852 (John M. Phillips)	City	Government & Politics 19th Century, Government & Politics 20th Century, Professions & Vocations
John Scull (1765-1828)		December 1, 1958	Boulevard of the Allies, just west of Market Street, Pittsburgh 40.43902°N 80.00376°W / 40.43902; -80.00376 (John Scull)	City	Business & Industry, Professions & Vocations, Publishing
John T. Comès (1873-1922)		January 27, 2013	St. Agnes Center at Carlow University, 3219 5th Avenue, Oakland (Pittsburgh) 40.350572°N 79.86764°W / 40.350572; -79.86764 (John T. Comès (1873-1922))	City	Buildings & Architecture, Professions & Vocations, Religion, Writers
Johnny Unitas (1933-2002)		September 4, 2004	Arsenal Middle School Field, Butler & 40th Streets, Lawrenceville 40.46827°N 79.96268°W / 40.46827; -79.96268 (Johnny Unitas)	City	Football, Sports
Joshua (Josh) Gibson (1911-1947)		September 23, 1996	2217 Bedford Avenue, Hill District (Pittsburgh) 40.44861°N 79.97754°W / 40.44861; -79.97754 (Joshua "Josh" Gibson)	City	African American, Baseball, Sports
Joshua Meeks (1731-1818)		May 7, 2008	Beaver Grade Road at entrance to Forest Glen Condos, Moon Township 40.509622°N 80.212178°W / 40.509622; -80.212178 (Joshua Meeks)	Roadside	American Revolution, Early Settlement, Education, Government & Politics 18th Century, Military
K. Leroy Irvis (1916-2006)		April 3, 2008	2170 Centre Avenue, Hill District (Pittsburgh)(MISSING)	Roadside	African American, Civil Rights, Education, Government & Politics 20th Century, Labor
Kennedy-Nixon Taft-Hartley Debate		June 23, 2012	5th Avenue at Market Street (PA 148), McKeesport 40.350572°N 79.86764°W / 40.350572; -79.86764 (Kennedy-Nixon Taft-Hartley Debate)	City	Politics, Labor Unions
Kennywood Park		August 5, 1992	Just outside North Gate Entrance from parking lot, West Mifflin 40.3857°N 79.86564°W / 40.3857; -79.86564 (Kennywood Park)	Roadside	Sports
Kier Refinery		March 16, 1959	Small park near Chatham/Bigelow Square, between Bigelow Boulevard & 7th Avenue, Pittsburgh 40.44145°N 79.99405°W / 40.44145; -79.99405 (Kier Refinery)	City	Business & Industry, Entrepreneurs
Kuskusky Path		August 24, 2008	2500 Brandt School Road, at Trinity Lutheran Church, Wexford (Franklin Park) 40.601906°N 80.080242°W / 40.601906; -80.080242 (Kuskusky Path)	Roadside	Early Settlement, Military, Native American, Paths & Trails, Transportation
Lewis and Clark Expedition		August 28, 2008	1 block north of 10th Street Bypass & Waterfront Drive intersection, Pittsburgh 40.447°N 79.9952°W / 40.447; -79.9952 (Lewis and Clark Expedition)	City	Exploration
Martha Graham (1894-1991)		June 7, 2008	California Avenue & Brighton Road North Side (Pittsburgh) (Pittsburgh) 40.459427°N 80.016865°W / 40.459427; -80.016865 (Martha Graham)	City	Education, Music & Theater, Performers, Women
Martin R. Delany (1812-1885)		May 11, 1995	5 PPG Place, 3rd Avenue & Market Street, Pittsburgh 40.43948°N 80.00325°W / 40.43948; -80.00325 (Martin R. Delany)	City	African American, Civil War, Military, Professions & Vocations, Publishing
Mary Cassatt (1844-1926)		May 22, 2004	Allegheny and Ridge Avenues, in park, Allegheny Avenue & I-376 on-ramp, North Side (Pittsburgh) 40.44937°N 80.01809°W / 40.44937; -80.01809 (Mary Cassatt)	City	Artists, Women
Mary Harris "Mother" Jones		October 4, 2003	Northeast corner of 9th and Amity Streets, (at former municipal building), Homestead 40.40654°N 79.91016°W / 40.40654; -79.91016 (Mary Harris "Mother" Jones)	City	Government & Politics 20th Century, Labor, Steel, Women
Mary Lou Williams (1910-1981)		November 30, 1996	Lincoln Elementary School, Frankstown Road, Larimer (Pittsburgh) 40.46°N 79.91209°W / 40.46; -79.91209 (Mary Lou Williams)	City	African American, Music & Theater, Performers, Women
McClurg Iron Foundry		May 16, 2016	Fifth Avenue, just west of Smithfield Street (Pittsburgh) 40.440252°N 79.998955°W / 40.440252; -79.998955 (McClurg Iron Foundry)	City	Buildings, Business & Industry, Military, War of 1812
McKees Rocks Mound		May 18, 2002	Rangers Field, Shingiss & Sproul Streets. The Bottoms, McKees Rocks 40.47301°N 80.05156°W / 40.47301; -80.05156 (McKees Rocks Mound)	City	Native American
Mercy Hospital		May 27, 1994	1400 Locust Street, Pittsburgh 40.43665°N 79.98489°W / 40.43665; -79.98489 (Mercy Hospital)	City	Education, Professions & Vocations, Religion, Women
Michael A. Musmanno (1897-1968)		October 11, 1993	1321 Island Avenue (PA 51), Stowe Township 40.48241°N 80.06998°W / 40.48241; -80.06998 (Michael A. Musmanno)	Roadside	Government & Politics, Government & Politics 20th Century, Writers
Monongahela River Navigation System		June 18, 2012	Elizabeth Lock & Dam, Bunola River Road, Elizabeth 40.262597°N 79.900161°W / 40.262597; -79.900161 (Monongahela River Navigation System)	Roadside	Business & Industry, Coal, Government & Politics 19th Century, Iron & Steel, Navigation, Transportation
Mooncrest		April 15, 2004	Mooncrest Drive at Old Thorn Run Road, Moon Twp. 40.521625°N 80.191103°W / 40.521625; -80.191103 (Mooncrest)	City	Business & Industry, Government & Politics 20th Century, Labor, Military, Military Post-Civil War
National Negro Opera Company		September 25, 1994	7101 Apple Street, Homewood (Pittsburgh) 40.4642°N 79.89571°W / 40.4642; -79.89571 (National Negro Opera Company)	City	African American, Music & Theater
National Tube Works		January 15, 1991	575 Lysle Boulevard (PA 148), at subway entrance to plant, McKeesport 40.35215°N 79.8604°W / 40.35215; -79.8604 (National Tube Works)	City	Business & Industry, Oil & Gas
Neville House		August 12, 1947	PA 50 just south of Woodville, Heidelberg 40.37939°N 80.09621°W / 40.37939; -80.09621 (Neville House)	Roadside	American Revolution, Houses & Homesteads, Military, Whiskey Rebellion
Old St. Luke's Church		July 14, 2001	330 Old Washington Pike & Church Street, Scott Township 40.38449°N 80.09067°W / 40.38449; -80.09067 (Old St. Luke's Church)	Roadside	Buildings, Early Settlement, French & Indian War, Military, Religion, Whiskey Rebellion
Pennsylvania Canal		December 1, 1958	Liberty Avenue at 11th Street (at the Pennsylvanian), Pittsburgh 40.44398°N 79.99289°W / 40.44398; -79.99289 (Pennsylvania Canal)	City	Canals, Navigation, Transportation
Pioneer Short-Wave Station		November 2, 1997	Barclay Avenue, off Greensburg Pike, Forest Hills 40.41831°N 79.84138°W / 40.41831; -79.84138 (Pioneer Short-Wave Station)	City	Business & Industry
Pittsburgh		December 21, 1946	PA 51 at south city line, near Stewart Avenue (MISSING)	Roadside	Cities & Towns, Early Settlement, Forts, Government & Politics, Steel
Pittsburgh		December 18, 1946	4675 Steubenville Pike (PA 60) at West Steuben Street, at bridge and Sharp Edge Creekhouse restaurant, Thornburg 40.44041°N 80.08066°W / 40.44041; -80.08066 (Pittsburgh)	Roadside	Cities & Towns, Early Settlement, Forts, Government & Politics, Steel
Pittsburgh		December 23, 1946	PA 65 (Ohio River Boulevard), north city line (MISSING)	Roadside	Cities & Towns, Early Settlement, Forts, Government & Politics, Steel
Pittsburgh		December 18, 1946	US 30 (Ardmore Boulevard) westbound at park, Forest Hills 40.423907°N 79.857575°W / 40.423907; -79.857575 (Pittsburgh) -->	Roadside	Cities & Towns, Early Settlement, Forts, Government & Politics, Steel
Pittsburgh		December 18, 1946	PA 8 & PA 28, Millvale (MISSING)	Roadside	Cities & Towns, Early Settlement, Forts, Government & Politics, Steel
Pittsburgh		December 21, 1946	Perrysville Road (US 19), near St. Benedict's Academy, north of city line (MISSING)	Roadside	Cities & Towns
Pittsburgh		December 18, 1946	PA 65 at north city line (MISSING)	Roadside	Cities & Towns
Pittsburgh		December 18, 1946	US 19 north of city line (MISSING)	Roadside	Cities & Towns
Pittsburgh Agreement (The)		May 31, 2001	Penn Avenue & 7th Street, Pittsburgh 40.44312°N 80.000314°W / 40.44312; -80.000314 (Pittsburgh Agreement, The)	City	Ethnic & Immigration, Government & Politics 20th Century
Pittsburgh Glass Works		October 2, 1997	Foot of Duquesne Incline, West Carson Street, Pittsburgh 40.43986°N 80.0174°W / 40.43986; -80.0174 (Pittsburgh Glass Works)	City	Business & Industry, Glass
Pittsburgh Grease Plant		September 18, 2000	33rd Street & Smallman Street, Strip District (Pittsburgh) 40.46258°N 79.96909°W / 40.46258; -79.96909 (Pittsburgh Grease Plant)	City	Business & Industry, Military, Military Post-Civil War, Oil & Gas, Transportation
Pittsburgh Plate Glass Company		October 19, 1983	Plaza of PPG Place, between 4th Avenue & Market Square, Pittsburgh 40.44017°N 80.00288°W / 40.44017; -80.00288 (Pittsburgh Plate Glass Company)	City	Business & Industry, Glass
Pittsburgh Platform		October 10, 2007	Stockton Avenue at Concordia Club, East Park (North Side), Pittsburgh 40.4509°N 80.0019°W / 40.4509; -80.0019 (Pittsburgh Platform)	City	Religion
Polish Army		April 3, 1960	Polish Falcons, 97 South 18th Street, South Side Flats (Pittsburgh) 40.428158°N 79.980289°W / 40.428158; -79.980289 (Polish Army)	City	Ethnic & Immigration, Military, Military Post-Civil War
Presston		August 22, 2009	Ohio & Center Streets, Presston, Stowe Township 40.482711°N 80.062904°W / 40.482711; -80.062904 (Presston)	Roadside	Ethnic & Immigration, Government & Politics 20th Century, Labor, Steel
Queen Aliquippa		October 26, 2003	2928 Highland Avenue, Highland Grove Park, near 2918 Bowman Avenue, McKeesport 40.35983°N 79.83326°W / 40.35983; -79.83326 (Queen Aliquippa)	Roadside	French & Indian War, George Washington, Government & Politics 18th Century, Military, Native American, Women
Rachel Carson		May 20, 1988	Pittsburgh Street at Colfax Street, Springdale 40.54105°N 79.78399°W / 40.54105; -79.78399 (Rachel Carson)	City	Environment, Medicine & Science, Women, Writers
Radio Station KDKA		November 30, 1990	KDKA Headquarters, 1 Gateway Center, Pittsburgh 40.44255°N 80.00543°W / 40.44255; -80.00543 (Radio Station KDKA)	City	Business & Industry
Railroad Strike of 1877		September 23, 1997	Liberty Avenue at 28th Street (on traffic island), Strip District (Pittsburgh) 40.45618°N 79.97491°W / 40.45618; -79.97491 (Railroad Strike of 1877)	City	Labor, Railroads, Transportation
Robert Lee Vann (1879-1940)		July 13, 1997	Center Avenue, at Francis Street, Hill District (Pittsburgh) 40.447057°N 79.967413°W / 40.447057; -79.967413 (Robert Lee Vann)	City	African American, Government & Politics, Government & Politics 20th Century, Professions & Vocations, Publishing
Salk Polio Vaccine		April 12, 2005	Salk Hall, University of Pittsburgh, Terrace Street at Sutherland Drive (across from Peterson Events Ctr.), Oakland (Pittsburgh) 40.442763°N 79.96209°W / 40.442763; -79.96209 (Salk Polio Vaccine)	Roadside	Invention, Medicine & Science
Shadyside Iron Furnace		December 1, 1958	Southeast corner of Bayard Street & Amberson Avenue, at Winchester-Thurston High School field, Shadyside (Pittsburgh) 40.4521°N 79.94173°W / 40.4521; -79.94173 (Shadyside Iron Furnace)	City	Business & Industry, Furnaces, Iron
Shannopin Town		December 1, 1958	40th Street Bridge (west side), Lawrenceville (Pittsburgh) 40.46953°N 79.96358°W / 40.46953; -79.96358 (Shannopin Town)	City	Early Settlement, Native American
Shousetown Boatyard		June 14, 1987	McGovern Boulevard (PA 51) near Spring Run Road, Honor Roll Park, across from fire department, Glenwillard/Crescent Township 40.55716°N 80.22081°W / 40.55716; -80.22081 (Shousetown Boatyard)	City	Business & Industry, Transportation
Sisters of Mercy		December 21, 1993	800 Penn Avenue, Cultural District, (Pittsburgh) 40.443448°N 79.999158°W / 40.443448; -79.999158 (Sisters of Mercy)	City	Ethnic & Immigration, Religion, Women
Site of the Western Penitentiary - PLAQUE		1931	Eagle enclosure at the National Aviary, North Side (Pittsburgh) 40.4532°N 80.01015°W / 40.4532; -80.01015 (Site of the Western Penitentiary - PLAQUE)	Plaque	Civil War, Military, Police and Safety
Station WQED		August 20, 1964	4802 5th Avenue, Oakland (Pittsburgh) 40.44717°N 79.94453°W / 40.44717; -79.94453 (Station WQED)	City	Business & Industry, Education, Motion Pictures & Television
Steamboat "New Orleans"		October 15, 2011	First Avenue at Try Street, Pittsburgh 40.435567°N 79.996250°W / 40.435567; -79.996250 (Steamboat "New Orleans")	City	Business & Industry, Exploration, Navigation, Transportation
Stephen C. Foster		July 4, 1976	3600 Penn Avenue, at homestead (behind fence), Lawrenceville (Pittsburgh) 40.46415°N 79.96374°W / 40.46415; -79.96374 (Stephen C. Foster)	Roadside	Music & Theater
Stephen C. Foster Memorial		December 1, 1958	Forbes Avenue just east of Bigelow Boulevard, Oakland (Pittsburgh) 40.44354°N 79.95256°W / 40.44354; -79.95256 (Stephen C. Foster Memorial)	City	Music & Theater, Writers
Three Rivers Stadium		November 26, 2007	Art Rooney Avenue, near North Shore Drive, Heinz Field, North Shore (Pittsburgh) 40.44602°N 80.01387°W / 40.44602; -80.01387 (Three Rivers Stadium)	Roadside	Baseball, Football, Sports
Union Local 471 American Federation of Musicians		June 23, 2012	Crawford Avenue at Webster Avenue, Hill District (Pittsburgh) 40.443100°N 79.987400°W / 40.443100; -79.987400 (Union Local 471 American Federation of Musicians)	Roadside	African American, Labor, Music & Theater, Performers
United Steelworkers of America		June 17, 1986	4th Avenue & Grant Street, Pittsburgh 40.437941°N 79.997501°W / 40.437941; -79.997501 (United Steelworkers of America)	City	Government & Politics 20th Century, Labor, Steel
University of Pittsburgh		November 2, 1979	Southeast corner, 5th Avenue & Bigelow Boulevard, Oakland (Pittsburgh) 40.44444°N 79.95452°W / 40.44444; -79.95452 (University of Pittsburgh)	City	Education
V.F.W.		September 16, 1967	5th Avenue & Bigelow Boulevard, at Wm. Pitt Union by bus stop, Oakland, Pittsburgh 40.44416°N 79.95458°W / 40.44416; -79.95458 (V.F.W.)	City	Military, Military Post-Civil War
Victor Herbert (1859-1924)		August 28, 2010	4400 Forbes Avenue, at Carnegie Mus. near Shakespeare statue, Oakland (Pittsburgh) 40.443587°N 79.951356°W / 40.443587; -79.951356 (Victor Herbert)	City	Ethnic & Immigration, Performers
Westinghouse Atom Smasher		June 3, 2005	North Avenue at F Avenue, Forest Hills 40.410474°N 79.842308°W / 40.410474; -79.842308 (Westinghouse Atom Smasher)	City	Environment, Invention, Science & Medicine
Westinghouse Electric Corporation		October 1, 1986	Westinghouse Plaza by First Niagara Building, Pittsburgh 40.439350°N 80.006217°W / 40.439350; -80.006217 (Westinghouse Electric Corporation)	City	Business & Industry, Electricity
Westinghouse Railroad Air Brake		July 23, 2011	Liberty Avenue at 25th Street at Opera House, Strip District (Pittsburgh) 40.45334°N 79.979277°W / 40.45334; -79.979277 (Westinghouse Railroad Air Brake)	City	Invention, Railroads, Transportation
William "Billy" Strayhorn (1915-1967)		May 27, 1995	1101 North Murtland Street, at Westinghouse High School, Homewood (Pittsburgh) 40.4606°N 79.9003°W / 40.4606; -79.9003 (William "Billy" Strayhorn)	City	African American, Music & Theater
William D. Boyce (1858-1929)		June 11, 1960	595 Beatty Road, Boyce Campus of Community College of Allegheny County, Monroeville 40.45407°N 79.75371°W / 40.45407; -79.75371 (William D. Boyce)	Roadside	Education
William T. Kerr (1868-1953)		June 12, 1992	4 Columbia Avenue at Noblestown Road, at bus stop, Rennersdale 40.39809°N 80.14012°W / 40.39809; -80.14012 (William T. Kerr)	Roadside	Government & Politics, Government & Politics 20th Century
Work Accidents and the Law (1910)		April 28, 2008	Market Square, Pittsburgh 40.440488°N 80.002669°W / 40.440488; -80.002669 (Work Accidents and the Law 1910)	City	Business & Industry, Government & Politics 20th Century, Labor, Women, Writers
Yohogania Courthouse		June 10, 1948	PA 837 southwest of West Elizabeth 40.261517°N 79.911650°W / 40.261517; -79.911650 (Yohogania Courthouse)	Roadside	Government & Politics, Government & Politics 18th Century