Surficial geologic map of the Grassy Lake Reservoir Quadrangle, Yellowstone National Park and adjoining area, Wyoming

I-644 Surficial geologic map of the Grassy Lake Reservoir Quadrangle, Yellowstone National Park and adjoining area, Wyoming, scale 1:62,500, 1974, ISBN 978-0-607-77418-4 Keywords: Park county, Geologic maps, , Earthquakes, Geologic Hazards, Landforms, Landslides, Yellowstone