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  1. By: Bigelow, Henry Bryant, - Welsh, William W.,
    Publication info: Washington,Govt. Print. Off.,1925.
    Holding Institution: MBLWHOI Library
  2. By: Ginsburg, Isaac, - Welsh, William W.,
    Publication info: 1915
    Holding Institution: Smithsonian Institution Archives
    BHL Collections: Smithsonian Field Books collection
  3. By: Ginsburg, Isaac, - Welsh, William W.,
    Publication info: 1916
    Holding Institution: Smithsonian Institution Archives
    BHL Collections: Smithsonian Field Books collection