Published Biographical References

• University of Pennsylvania Architectural Alumni Society. The Book of the School. Philadelphia: University of Pennsylvania Press, 1934., p. 177
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• AIA/T-Square Yearbook, 1949
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  Membership: Philadelphia Chapter, AIA, Corporate Member
   
• Koyl, George. American Architects' Directory. New York: R.R. Bowker Co., 1956
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  Office: Philadelphia
   
• Koyl, George. American Architects' Directory. New York: R.R. Bowker Co., 1962
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  Office: Philadelphia
   
• Koyl, George. American Architects' Directory. New York: R.R. Bowker Co., p. 1118, 1970
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• "David Supowitz." Exhibitor 19 (15 March 1937)
   
• Supowitz, David. "Philadelphia's First Modern Theatre in 20 Years." Interiors 106(November 1946): 110, 144.
   
• University of Pennsylvania. General Alumni Catalogue. Philadelphia: 1917, p. 388.
   

Biographical Drawings, Photos, Papers, etc.

• Membership records, American Institute of Architects Archives, Washington, DC
   

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