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  1. Allen's digest of plows, with attachments, patented in the United States from A.D. 1789 to January 1883 ... Comp. and arranged by James T. Allen.
    By: Allen, James T.
    Publication info: Washington, D.C.,Joseph Bart, Printer,1883
    Contributed by: UMass Amherst Libraries (archive.org)
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  2. Digest of agricultural implements, patented in the United States from A.D. 1789 to July 1881 ... Compiled and arranged by James T. Allen ..
    By: Allen, James T. - United States.
    Publication info: New York,Printed by J.C. Von Arx,1886
    Contributed by: UMass Amherst Libraries (archive.org)
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  3. Supplement to Allen's Digest of Agricultural implements, patented in the United States (from 1789 to July 1881) beginning with July 1881 to and including June 1884. Compiled and arranged by James T. Allen ..
    By: Allen, James T. - United States.
    Publication info: [New York?]188-?]
    Contributed by: UMass Amherst Libraries (archive.org)
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