Image: Erie Extension Canal historical marker in Sadsbury Township

Description: Historical marker at the junction of Pennsylvania Route 618 and the Erie Extension Canal in Sadsbury Township, Crawford County, Pennsylvania, United States.
Title: Erie Extension Canal historical marker in Sadsbury Township
Credit: Own work
Author: Nyttend
Permission: This work is in the public domain in the United States because it was published in the United States between 1926 and 1977, inclusive, without a copyright notice. For further explanation, see Commons:Hirtle chart as well as a detailed definition of "publication" for public art. Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), 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.
Usage Terms: Public domain
License: Public domain
Attribution Required?: No