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Glen Foerd Conservation Corporation blueprints collection, 1890-2007 (inclusive)
Held at: Glen Foerd on the Delaware [Contact Us]
Held at: Glen Foerd on the Delaware [Contact Us]
Held at: Glen Foerd on the Delaware [Contact Us]
Held at: The Historical Society of Trappe, Collegeville, Perkiomen Valley [Contact Us]
Held at: Awbury Arboretum [Contact Us]
Held at: The Henry George Birthplace, Archive and Historical Research Center [Contact Us]