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General correspondence relating to Civil Works projects originating under the Wilmington and Philadelphia Engineers, 1907-1943 (bulk) 1871-1948 (inclusive)
Held at: National Archives at Philadelphia [Contact Us]
Held at: National Archives at Philadelphia [Contact Us]
Held at: Pennsylvania Horticultural Society [Contact Us]
Held at: City of Philadelphia, Department of Records, City Archives [Contact Us]
Held at: Chester County Historical Society [Contact Us]
Held at: Wagner Free Institute of Science [Contact Us]
Held at: Academy of Natural Sciences, Philadelphia [Contact Us]
Held at: Academy of Natural Sciences, Philadelphia [Contact Us]
Held at: Academy of Natural Sciences, Philadelphia [Contact Us]
Held at: Academy of Natural Sciences, Philadelphia [Contact Us]
Held at: Academy of Natural Sciences, Philadelphia [Contact Us]