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Scarce separately issued large format map of the Lower Geyer Basin in Yellowstone Park, compiled and drawn from field notes and sketches of A. Schonborn, by E. Hergeshiemer.

The map is one of two maps of the Fire Hole River area published. This map extends from the area of Biscuit Basin in the north.

This is the sheet which includes Old Faithful, at the bottom right corner, the West Fork of Iron Springs Creek in the southwest and Old Faithful in the Southeast.