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Cox-Robinson-Ross family papers, 1669-1980 (inclusive)
Held at: Old York Road Historical Society [Contact Us]
Held at: Old York Road Historical Society [Contact Us]
Held at: Historical Society of Pennsylvania [Contact Us]
Held at: Historical Society of Pennsylvania [Contact Us]
Held at: Historical Society of Pennsylvania [Contact Us]
Held at: Historical Society of Pennsylvania [Contact Us]
Held at: Historical Society of Pennsylvania [Contact Us]
Held at: Science History Institute Archives [Contact Us]
Held at: American Swedish Historical Museum [Contact Us]
Held at: Charlestown Historical Society [Contact Us]
Held at: Chestnut Hill Historical Society [Contact Us]