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  1. By: Wetmore, Alexander,
    Publication info: 1951
    Holding Institution: Smithsonian Institution Archives
    Subjects: Correspondence  Field notes  Kirtland's warbler  Maps  Michigan  Ornithology  United States  United States National Museum  
    BHL Collections: Smithsonian Field Books collection
  2. By: United States. Forest Service.
    Publication info: Washington, D.C.?, U.S. Dept. of Agriculture, Forest Service, 1994?
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Birds  Endangered species  Kirtland's warbler  Michigan  United States