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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Wood, Elvira. - Troost, Gerard,
    Publication info: Washington, Govt. print. off, 1909
    Holding Institution: Smithsonian Libraries and Archives
  2. By: Troost, Gerard,
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library
    BHL Collections: John Torrey Papers
  3. By: Troost, Gerard,
    Publication info: 1849-1904
    Holding Institution: Smithsonian Institution Archives
    BHL Collections: Smithsonian Field Books collection
  4. By: Troost, Gerard,
    Publication info: 1849-1904
    Holding Institution: Smithsonian Institution Archives
    BHL Collections: Smithsonian Field Books collection