Donald L. Coffin

1934

• Water resources of the upper Blackfoot River Valley, west-central Montana
• A preliminary evaluation of bank storage associated with Libby Reservoir in northwestern Montana
• Geology and ground-water resources of the Big Sandy Creek Valley, Lincoln, Cheyenne, and Kiowa Counties, Colorado
• Geology and ground-water resources of the Big Sandy Creek valley, Lincoln, Cheyenne, and Kiowa Counties, Colorado
• Surficial geology and water resources of the Tobacco and upper Stillwater River valleys, northwestern Montana