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Cornelia Hennigan research on the Williamson Free School of Mechanical Trades, circa 2000-2008
Held at: Williamson College of the Trades (Williamson Free School of Mechanical Trades) [Contact Us]
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Greater Media Area Auxiliary, American Leprosy Missions records, 1914-2011 (inclusive)
Held at: Delaware County Historical Society [Contact Us]
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Harold W. Arndt papers of the Delaware County Institute of Science, Geological and Mineralogical Section, 1938-1942 (inclusive)
Held at: Delaware County Institute of Science [Contact Us]
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Media Historic Archives Commission local manuscripts collection, 1847-circa 1975
Held at: Media Historic Archives Commission [Contact Us]
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Malin family papers, 1684-1880 (bulk) 1684-1992 (inclusive)
Held at: Media Historic Archives Commission [Contact Us]
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Stephen H. Appleton glass plate negatives, circa 1880-1900
Held at: Media Historic Archives Commission [Contact Us]
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Williamson Free School of Mechanical Trades records, 1888-2014 (bulk) 1746-2014 (inclusive)
Held at: Williamson College of the Trades (Williamson Free School of Mechanical Trades) [Contact Us]
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T. Chalkley Palmer natural science teaching collection, circa 1880-1930
Held at: Delaware County Institute of Science [Contact Us]
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Elwyn records, 1852-2006 (inclusive)
Held at: Elwyn Historical Archives and Museum [Contact Us]
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