| Map of the Sources of Snake river. with its tributaries, together with portions of the headwaters of the Madison and Yellowstone | Idaho (Estados Unidos) (Estado). Mapas hidrográficos. 1900-1915.
Escala 1:316.800 | Bechler, Gustavus R. / Stevenson, James / Geological Survey. Estados Unidos / Bien, Julius |  |
