What's online?
The online collection of United States Army Corps of Engineers, Pittsburgh District Glass Plate Negatives contains images that date from 1909 to c. 1930. The images depict bridges, locks, dams, and construction projects along the Allegheny, Monongahela, Ohio, and Youghiogheny rivers in western Pennsylvania and northern West Virginia.
About the United States Army Corps of Engineers
The United States Army Corps of Engineers, Pittsburgh District works to maintain navigable waterways, reduce flood damage and repair aquatic infrastructure in the greater western Pennsylvania region. Initiated in 1893, the Pittsburgh District operates as one of seven divisions with the Great Lakes and Ohio River Division of the Army Corps of Engineers, extending into Ohio, New York, Maryland, and West Virginia. Read more...
Historic Pittsburgh is a collaborative effort from multiple institutions in the Greater Pittsburgh region and is hosted by the University of Pittsburgh’s Library System.