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  1. By: Humphreys, A. A.
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library
    BHL Collections: John Torrey Papers | New York Botanical Garden
  2. By: United States. Office of Explorations and Surveys. - Humphreys, A. A. - Ives, J. C. - Pope, John. - Warren, Gouverneur Kemble,
    Publication info: Washington1859.
    Holding Institution: Library of Congress
  3. By: Gray, Asa, - Holm, Theo. (Theodor), - Holmes, Oliver Wendell, - Holton, Isaac F. (Isaac Farwell) - Holzinger, J. M. (John Michael), - Hooper, Edward William, - Horsford, Frederick Hinsdale, - Howell, Joseph, - Howell, Thomas, - Humphreys, A. A. - Hunnewell, Horatio Hollis, - Hunt, Thomas Sterry, - Hunter, C.L.,
    Publication info: [1837-1903]
    Holding Institution: Harvard University Botany Libraries
  4. By: Geographical Surveys West of the 100th Meridian (U.S.). - Humphreys, A. A. - Wheeler, George M. (George Montague), - Wright, Horatio Gouverneur,
    Publication info: Washington,Govt. Print. Off.,1875-89.
    Holding Institution: Research Library, The Getty Research Institute (archive.org)
  5. By: Wheeler, George M. (George Montague), - Geographical Surveys West of the 100th Meridian (U.S.) - Humphreys, A. A. - Wheeler, George M. (George Montague), - Humphreys, A. A. - Wright, Horatio Gouverneur, - Geographical Surveys West of the 100th Meridian (U.S.)
    Publication info: Washington [D.C.] :G.P.O.,1875-1889.
    Holding Institution: Multiple institutions
    BHL Collections: Unearthed! Smithsonian Libraries' Paleo Collection
  1. By: Humphreys, A. A.
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1855-08-01
    Publication info: [1837-1903]
  2. By: Humphreys, A. A.
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1855-08-23
    Publication info: [1837-1903]
  3. By: Humphreys, A. A.
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1855-07-01
    Publication info: [1837-1903]
  4. By: Humphreys, A. A.
    Type: Correspondence
    In: Asa Gray correspondence.
    Date: 1855-07-25
    Publication info: [1837-1903]