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Henry Howard Houston Estate Papers, 1698-1989 (inclusive) 1830-1953 (bulk)
Held at: University of Pennsylvania: University Archives and Records Center [Contact Us]
Held at: University of Pennsylvania: University Archives and Records Center [Contact Us]
Held at: Horsham Preservation and Historical Association [Contact Us]
Held at: Lower Merion Historical Society [Contact Us]
Held at: Old York Road Historical Society [Contact Us]
Held at: Pottstown Historical Society [Contact Us]
Held at: The Historical Society of Trappe, Collegeville, Perkiomen Valley [Contact Us]
Held at: Millbrook Society [Contact Us]
Held at: Old York Road Historical Society [Contact Us]
Held at: Goschenhoppen Historians, Inc. [Contact Us]