This terrific map is from the 1982-83 Philadelphia College of Art catalog which I uncovered amid my clutter and marveled at the terrifically clean graphic design done well before anybody had heard of Illustrator, Freehand or CorelDraw. This was all laid out by hand with a lot of care, a lot of patience and a lot of X-Acto #11 blades.
Also of interest particularly to the members of The ARCO Park Preservation Society is the map’s legend below the graphic.
This turned out to be invaluable as far as settling arguments over which floor such-and-such a major was situated.
The section of the map bordered by Delancey, 15th, Spruce and Broad Streets is all gone. Sadly, our glorious ARCO Park along with a number of the buildings in the PCA map have been swallowed up by the massive Kimmel Center for the Performing Arts. The Kimmel Center is the new home of the Philadelphia Orchestra and occasionally it hosts flea markets.