These aerial photographs were provided to the Donald W. Hamer Center for Maps and Geospatial Information from the PA Department of Conservation and Natural Resources, Bureau of Geological Survey Library in 2021. Coverage includes Pennsylvania counties of Allegheny, Armstrong, Beaver, Butler, Fayette, Greene, Indiana, Washington, and Westmoreland and were collected in the 2000 to 2001 timeframe.

These photos were scanned at 800 dpi on an Epson Expression 11000 scanner by the Donald W. Hamer Center for Maps and Geospatial Information. A digital index was obtained from an archived website of the Southwestern PA SPC website and updated to include the scanned aerial photograph file names. These aerial photos were collected by EarthData International for the Southwestern PA SPC. The scale of images is Scale 1:14,400. 1ʺ = 1,200ʹ with a focal length of 153.0mm. Scanned index sheets are also included. See PSU Libraries Catalog entry.