United States Geological Survey
Found in 2 Collections and/or Records:
Map of Snake River, c1879
Map of the Snake River, with its tributaries together with portions of the headwaters of Madison and Yellowstone, surveyed by the Snake River Expedition (Gustavus R Bechler, chief topographer and James Stevenson, director) of the United States Geological Survey of the Territories.
Map of the Sources of the Snake River, c1879
Map of the Sources of the Snake River, with its tributaries together with portions of the headwaters of Madison and Yellowstone, surveyed by the Snake River Expedition (Gustavus R Bechler, chief topographer and Frank H Bradley, geologist) of the United States Geological Survey of the Territories.