Published Biographical References

• Koyl, George. American Architects' Directory. New York: R.R. Bowker Co., p. 189, 1956
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• Koyl, George. American Architects' Directory. New York: R.R. Bowker Co., p. 12, 16, 237, 782, 1962
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• Koyl, George. American Architects' Directory. New York: R.R. Bowker Co., p. 309, 1970
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• Obituary: Philadelphia Inquirer - 14 September 1988.
   

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