Published References

• King, Moses. Philadelphia and Notable Philadelphians. New York: Blanchard Press, Isaac H. Blanchard Co., 1901., p. 8a
  Links: View citation information
  Client/Project Name: DeLong Bldg
   

Drawings, Photos, Papers, etc.

• Athenaeum of Philadelphia - Ballinger Collection
  Holding Name: Delong Building
  Quantity: 1 photoprint : b&w ; 8 x 10 in., Call Number: BAP*115*001. BAL-PHO-1259
  Architect Referenced: Ballinger & Perrot (fl. 1901-1920)
   
• Philadelphia Historical Commission - Philadelphia Historical Commission Files
  Holding Name: 1232 Chestnut Street; DeLong Building
  Quantity: 1 folder (incl. 7 photographs)
   

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