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  1. Correspondence : Simpson (James) and Engelmann (George), 1860-1875.
    By: Simpson, J. H.
    Contributed by: Missouri Botanical Garden, Peter H. Raven Library
    BHL Collections: Engelmann Papers, Missouri Botanical Garden
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  2. Report of explorations across the great basin of the territory of Utah :for a direct wagon-route from Camp Floyd to Genoa, in Carson Valley, in 1859 /by Captain J. H. Simpson. Made by authority of the secretary of war and under instructions from Bvt. Brig. Gen. A. S. Johnston.
    By: United States. - Simpson, J. H.
    Publication info: Washington :Govt. print. off.,1876.
    Contributed by: Missouri Botanical Garden, Peter H. Raven Library
    BHL Collections: Engelmann Herbarium
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  3. Report on icthyology.
    By: Gill, Theodore, - Simpson, J. H.
    Publication info: Washington,Government Printing Office,1876.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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  4. Report on the botany of the expedition /by George Engelmann.
    By: Engelmann, George, - Simpson, J. H.
    Publication info: Washington :Govt. Print. Off.,1876.
    Contributed by: Missouri Botanical Garden, Peter H. Raven Library
    BHL Collections: Engelmann Herbarium
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