3. Collections photographiques diverses :

1. Pittsburgh City Photographers’ Collection, Bureau of Construction, Archives of Industrial Society, AIS : 71 : 5, Hillman Library, University of Pittsburgh.
2. Industry : A magazine of commerce and finance, Pittsburgh : Industry Publishing Company, vol. 1-4, 1906-1908.
3. Jones and Laughlin photographs collection, Library and Archives Collection, MSP # 33, Historical Society of Western Pennsylvania, Pittsburgh.
4. Pennsylvania Industrial Statistics Bureau, Annual Report, Harrisburgh, vol. 15-29, 1887-1901.
5. Pittsburgh Association for the Improvement of the Poor, Annual Report, vol. 34-38, 1909-1914.
6. T. A. Gillespie Co. Photo Collection, Archives of Industrial Society, AIS 93 : 14, Hillman Library, University of Pittsburgh.
7. William J. Gaughan Collection, Archives of Industrial Society, AIS 94 : 3, Hillman Library, University of Pittsburgh.