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Pennsylvania Horticultural Society records, 1791-2006 (inclusive)
Held at: Pennsylvania Horticultural Society [Contact Us]
Held at: Pennsylvania Horticultural Society [Contact Us]
Held at: Philadelphia Museum of Art Archives [Contact Us]
Held at: Academy of Natural Sciences, Philadelphia [Contact Us]
Held at: Drexel University: Archives and Special Collections [Contact Us]
Held at: Drexel University: Archives and Special Collections [Contact Us]
Held at: Drexel University: Archives and Special Collections [Contact Us]
Held at: Science History Institute Archives [Contact Us]
Held at: Science History Institute Archives [Contact Us]
Held at: Science History Institute Archives [Contact Us]
Held at: Science History Institute Archives [Contact Us]