Looney, R. F. (1976). Old Philadelphia in early photographs 1839-1914: 215 prints from the collection of the Free Library of Philadelphia. New York: Published in cooperation with the Free Library of Philadelphia by Dover Publications.

Looney, Robert F. Old Philadelphia in Early Photographs 1839-1914: 215 Prints From the Collection of the Free Library of Philadelphia. New York: Published in cooperation with the Free Library of Philadelphia by Dover Publications, 1976.

Looney, Robert F. Old Philadelphia in Early Photographs 1839-1914: 215 Prints From the Collection of the Free Library of Philadelphia. New York: Published in cooperation with the Free Library of Philadelphia by Dover Publications, 1976.