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  1. Some accomplishments of the cooperative research units : a summary to January 31, 1937 /
    By: Jackson, Hartley H. T. - U.S. Fish and Wildlife Service. - United States.
    Publication info: Washington, D.C. :U.S. Dept. of the Interior, Fish and Wildlife Service,1937.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
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  2. A Taxonomic review of American long-tailed shrews (genera Sorex and Microsorex) By Hartley H. T. Jackson.
    By: Jackson, Hartley H. T.
    Publication info: Washington,U.S. Govt. Print. Off.,1928.
    Contributed by: Northeastern University, Snell Library (archive.org)
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