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Black Hills Field Notebook, 24 (Box 1, Folder 3)
Black Hills Field Notebook, 25 (Box 1, Folder 3)
Field notebook, 1 (Box 1, Folder 6)
Field notebook, 2 (Box 1, Folder 6)
Field notebook (Box 2, Folder 8)
Field notebook (Box 2, Folder 8)
Field notebook (Box 2, Folder 9)
Geological and natural History Survey of Minnesota, 19 (Box 1, Folder 2)
Geological and Natural History Survey of Minnesota, 20 (Box 1, Folder 1)
Geological and Natural History Survey of Minnesota, 21 (Box 1, Folder 1)