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County
Pittsburgh Neighborhood Atlas, 1977 recent views
Allegheny County / City of Pittsburgh / Western PA Regional Data Center —
This compilation includes five historical datasets that are part of the University of Pittsburgh Library collection. The datasets were transcribed from The... -
Federal
1970's Mosaic of Aerial Photography of the Salt River Bay National Historical Park and Ecological Preserve recent views
National Oceanic and Atmospheric Administration, Department of Commerce —
Aerial photographs taken by NOAA's National Geodetic Survey during 1977 and 1971 were mosaicked and orthorectified by the Biogeography Branch resulting in a single...