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  1. Diseases of deciduous forest trees / by Hermann von Schrenk and Perley Spaulding.
    By: Von Schrenk, Hermann, - Spaulding, Perley,
    Publication info: Washington :G.P.O.,1909.
    Contributed by: NCSU Libraries (archive.org)
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  2. New facts concerning the white-pine blister rust /
    By: Spaulding, Perley,
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1914.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
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