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  1. By: Barnard, Frederick A. P. (Frederick Augustus Porter),
    Holding Institution: Missouri Botanical Garden, Peter H. Raven Library
    BHL Collections: Engelmann Papers, Missouri Botanical Garden
  1. By: Barnard, Frederick A. P. (Frederick Augustus Porter),
    Type: Correspondence
    In: Asa Gray correspondence
    Date: 1874-09-08
    Publication Info: [1832-1902]