Source:Squirrel-hill-aerial-1956
From Pittsburgh Streets
Aerial photograph APS-2R-91. 1956. https://www.pasda.psu.edu/pennpilot/era1960/allegheny_1956/allegheny_1956_photos_jpg_800/allegheny_092156_aps_2r_91.jpg; https://www.pasda.psu.edu/pennpilot/era1960/allegheny_1956/allegheny_1956_photos_tif/allegheny_092156_aps_2r_91.tif; included in the 1957 layer at PGH Historic Maps and Imagery (https://pittsburghpa.maps.arcgis.com/apps/instant/basic/index.html?appid=25ed595c7bde40cdae7165261a9a3ad6).
