Description: Jonas Salk at the University of Pittsburgh where he developed the first polio vaccine.
Credit: University of Pittsburgh Digital Archives. This photo was previously published in 1957 Owl student yearbook of the University of Pittsburgh, pg.14-15.
Author: The Owl.
Permission: This work is in the public domain because it was published in the United States between 1923 and 1963 and although there may or may not have been a copyright notice, the copyright was not renewed. Unless its author has been dead for the required period, it is copyrighted in the countries or areas that do not apply the rule of the shorter term for US works, such as Canada (50 pma), Mainland China (50 pma, not Hong Kong or Macao), Germany (70 pma), Mexico (100 pma), Switzerland (70 pma), and other countries with individual treaties. See Commons:Hirtle chart for further explanation. Deutsch | English | español | français | italiano | 日本語 | 한국어 | македонски | português | português do Brasil | русский | українська | +/− This work is in the public domain because it was published in the United States between 1923 and 1977 and without a copyright notice. Unless its author has been dead for several years, it is copyrighted in jurisdictions that do not apply the rule of the shorter term for US works, such as Canada (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties. See this page for further explanation. Беларуская | Čeština | Deutsch | English | Español | Français | Italiano | 日本語 | Македонски | Nederlands | Português | Русский | Slovenščina | ไทย | +/− Published previously on page 14 & 15 of the 1957 Pitt student yearbook, the Owl. This work was originally published before 1964 had to have the copyright renewed sometime in the 28th year. If the copyright was not renewed the work is in the public domain. Renewals for copyrights from 1951 onward (and some, but not all, renewals for 1950 copyrights), as well as original registrations from 1978 onward are available online from the Copyright Office's Copyright Records web site. Originally this issue of The Owl was seemingly published without a copyright notice, but if it was published with a copyright notice of 1957, this issue of The Owl student yearbook would have had to be renewed in 1984. Online searches, regardless of year, of Copyright Office's Copyright Records web site for The Owl, editor Thomas C. Vrana, the business manager Eugene J. Reinbold, or the University of Pittsburgh revealed no renewal entries. This yearbook was never copyrighted or the copyright was not renewed and therefore it is in the public domain according to either criteria.
Usage Terms: Public domain
License: Public domain
Attribution Required?: No