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  1. Contributions from the Botanical Laboratory and the Morris Arboretum of the University of Pennsylvania.
    By: University of Pennsylvania. Botanical Laboratory. - University of Pennsylvania. Morris Arboretum.
    Publication info: Philadelphia :[s.n.,
    Contributed by: Penn State University (archive.org)
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  2. Contributions from the Botanical Laboratory of the University of Pennsylvania.
    By: University of Pennsylvania. Botanical Laboratory.
    Publication info: Philadelphia :University of Pennsylvania Press,1892-1932.
    Contributed by: New York Botanical Garden, LuEsther T. Mertz Library
    BHL Collections: New York Botanical Garden
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  3. Contributions from the Botanical Laboratory.
    By: University of Pennsylvania. Botanical Laboratory.
    Publication info: Philadelphia :University of Pennsylvania Press,1892-
    Contributed by: Penn State University (archive.org)
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  4. An experimental dissertation on the rhus vernix, rhus radicans and rhus glabrum : commonly known in Pennsylvania by the names of poison-ash, poison-vine and common sumach /
    By: Horsfield, Thomas, - Cist, Charles, - University of Pennsylvania. Botanical Laboratory.
    Publication info: Philadelphia :Printed by Charles Cist, no. 104, North Second Street,MDCCXCVIII [1798]
    Contributed by: National Library of Medicine (archive.org)
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