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  1. Botanic contributions relating to the flora of western North America
    By: Engelmann, George, - Frémont, John Charles, - Gray, Asa, - Torrey, John,
    Publication info: v.p.,1843-53
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library
    BHL Collections: New York Botanical Garden
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  2. Correspondence : Frémont (John) and Engelmann (George), 1844-1856
    By: Frémont, John Charles,
    Holding Institution: Missouri Botanical Garden, Peter H. Raven Library
    BHL Collections: Engelmann Papers, Missouri Botanical Garden
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  3. John Charles Frémont and John Torrey correspondence, 1842-1849
    By: Frémont, John Charles,
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library
    BHL Collections: John Torrey Papers | New York Botanical Garden
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  4. Narrative of the exploring expedition to the Rocky mountains in the year 1842, and to Oregon and north California in the years 1843-44 /
    By: Frémont, John Charles,
    Publication info: New York,Phildelphia,D. Appleton & company;G. S. Appleton; [etc., etc.]1846.
    Holding Institution: Missouri Botanical Garden, Peter H. Raven Library
    BHL Collections: Engelmann Herbarium
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  5. Plantæ fre´montianæ, or, Descriptions of plants collected by Col. J. C. Fre´mont in California /
    By: Torrey, John, - Frémont, John Charles,
    Publication info: Washington, D.C. :Smithsonian Institution,1853
    Holding Institution: Missouri Botanical Garden, Peter H. Raven Library
    BHL Collections: Engelmann Herbarium
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  6. Report of the exploring expedition to the Rocky Mountains in the year 1842, and to Oregon and north California in the years 1843-'44 /
    By: Frémont, John Charles, - Hall, James, - Preuss, Charles, - Torrey, John, - United States. Army. Corps of Engineers.
    Publication info: Washington :Gales and Seaton, printers,1845.
    Holding Institution: Boston College Libraries (archive.org)
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  7. Report of the exploring expedition to the Rocky Mountains in the year 1842 : and to Oregon and north California in the years 1843-44 /
    By: Frémont, John Charles, - Hall, James, - Torrey, John, - United States. Army. Corps of Engineers.
    Publication info: Washington :Blair and Rives, Printers,1845.
    Holding Institution: University of California Libraries (archive.org)
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  8. Report of the exploring expedition to the Rocky Mountains in the year 1842, and to Oregon and North California in the years 1843-'44 /
    By: Frémont, John Charles,
    Publication info: Washington :Gales and Seaton, Printers,1845.
    Holding Institution: Missouri Botanical Garden, Peter H. Raven Library
    BHL Collections: Engelmann Herbarium
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