This beautifully-colored topographical map was issued by the Park Superintendent after maps by the U.S. Geological Survey. It shows the entire park in great detail at a scale of four miles per inch. Legend identifies ranger stations, snowshoe cabins, existing roads, roads under construction, trails and more. It locates the remote Shoshone, Lewis and Heart Lakes; names the Upper, Shoshone, Gibbon, and Heart Lake Geyser Basins, Mud Geysers, Mammoth Hot Springs and more. There is terrific detail of topography with contour intervals at 100 feet, watershed and numerous features.

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Condition: A

Clean and bright, issued folding with some minor misfolding and a binding trim in the left margin.