Collins, S. D., & Blackburn, A. W. (1869). The great fire: Sworn testimony of the witnesses examined by Fire Marshal Blackburn, in reference to the causes of fire at Patterson's bonded warehouse. Philadelphia: E.C. Markley & Son, printers.

Collins, Samuel D., and Alexander W. Blackburn. The Great Fire: Sworn Testimony of the Witnesses Examined By Fire Marshal Blackburn, in Reference to the Causes of Fire At Patterson's Bonded Warehouse. Philadelphia: E.C. Markley & Son, printers, 1869.

Collins, Samuel D., and Alexander W. Blackburn. The Great Fire: Sworn Testimony of the Witnesses Examined By Fire Marshal Blackburn, in Reference to the Causes of Fire At Patterson's Bonded Warehouse. Philadelphia: E.C. Markley & Son, printers, 1869.