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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Cahill, Donn B. - United States. Forest Service.
    Publication info: Washington, D.C.?, U.S. Forest Service?, 1969?
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Bark beetles  Bighorn National Forest  Bighorn National Forest (Wyo.)  Diseases and pests  Trees  Wyoming
  2. By: Walcott, Charles D. (Charles Doolittle),
    Publication info: 1897-1915
    Holding Institution: Smithsonian Institution Archives
    Subjects: Bighorn National Forest  Custer  Field notes  Geology  Paleontology  United States  Upper Geyser Basin  Yellowstone National Park  
    BHL Collections: Smithsonian Field Books collection
  3. By: United States. Forest Service.
    Publication info: [Washington, D.C.], U.S. Department of Agriculture, Forest Service, [1909]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Bighorn National Forest  Bighorn National Forest (Wyo.)  Forest reserves  Forests and forestry  Maps  National parks and reserves  Wyoming