Detailed Street Map (2025).

Philadelphia Old City Map.

Independence National Historical Park, Philadelphia. Reprint 1995, National Park Service, Washington, DC.

Phildadelphia (1802).

Phildadelphia (1824).

Phildadelphia (1836).

Phildadelphia (1856).

Phildadelphia (1883).

Phildadelphia Guide Map (1890).

Phildadelphia and Vicinity (1903).

A "Mappe" of the Town of Phildadelphia (1940).

"Geological Survey, U.S, and Pennsylvania. Bureau Of Topographic And Geologic Survey. Philadelphia County, Pennsylvania. Reston, Va.: Interior--Geological Survey, 1982." Library of Congress.