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  1. Bird biographies, by Alice E. Ball ... illustrated by Robert Bruce Horsfall ... 56 colored plates.
    By: Ball, Alice Eliza, - Horsfall, R. Bruce
    Publication info: New York,Dodd, Mead,1923.
    Contributed by: American Museum of Natural History Library
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  2. Birds of California : an introduction to more than three hundred common birds of the state and adjacent islands, with a supplementary list of rare migrants, accidental visitants, and hypothetical subspecies /
    By: Wheelock, Irene Grosvenor. - Horsfall, R. Bruce
    Edition: 3rd ed.
    Publication info: Chicago :A.C. McClurg,1912, c1903.
    Contributed by: Cornell University Library
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