Published References

• White, Theo B., ed., Philadelphia Architecture in the Nineteenth Century. Philadelphia: University of Pennsylvania Press, 1953., p. 28, plate 43
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  Client/Project Name: Penn Mutual Life Insurance Co. / Penn Mutual Life Insurance Co. Building
  Architects Referenced: Cummings, J. B.; Singerly, Joseph (c.1807 - 1878)
   
• Webster, Richard J., Philadelphia Preserved. Philadelphia: Temple University Press, 1976., p. 87
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  Client/Project Name: Penn Mutual Life Insurance Co. / Penn Mutual Life Insurance Co. Building
   
• Historic American Buildings Survey (HABS) Collection at the Library of Congress
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  Client/Project Name: Penn Mutual Life Insurance Company Building (HABS PA-1451)
   
• Illustrated Philadelphia: Its Wealth and Industries. American Publishing & Engraving Co., 1889., p. 82
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  Client/Project Name: Third Street, Above Dock Street
   
• The Stranger's Guide in Philadelphia and its Environs. (Philadelphia: Lindsay & Blakiston, 1854)., p. 66
  Links: View citation information
  Client/Project Name: Penn Mutual Life Insurance Company / Penn Mutual Life Insurance Company Building
  Architects Referenced: Cummings, J. B.; Singerly, Joseph (c.1807 - 1878)
   
• HABS/HAER/HALS list for Philadelphia and surrounding counties (imported November 8, 2001)
   

Drawings, Photos, Papers, etc.

• Independence National Historical Park Library and Archives - Architectural Plans and Drawings Collection
  Holding Name: Philadelphia Quartz Co. (property) / Penn Mutual Building
  Quantity: 14 sheets, Call Number: Drawer 14, f. 5
  Architects Referenced: Oelschlager, Charles E. (fl. 1891 - 1935/36); Riegler, Gene
   
• University of Delaware Special Collections & Museums - Collins & Autenrieth Architectural Works
  Holding Name: Lea, M. C. / Penn Mutual Life Insurance Building
  Quantity: 10 items, Call Number: 359, Series II, f. 21
  Architect Referenced: Collins & Autenrieth (fl. 1852-1902)
   

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