User:Cobaltbluetony/Sandbox/David Supowitz

http://www.philadelphiabuildings.org/pab/app/ar_display.cfm/23985

http://westmonttheatre.wordpress.com/theatre-history/

http://search.yahoo.com/search?fr=ytff1-tyc7&p=%22David%20Supowitz%22&ei=UTF-8&type=