A great set of maps for the collector of Yellowstone material.

1) Yellowstone National Park, General Land Office, I.P. Berthrong. Very colorful map details topography and watershed, road and trails and all geological information. Excellent detail includes all geyser areas, and names scores of individual geysers including Old Faithful. (20 x 26.6")
2) Map of the Grounds in the Vicinity of Mammoth Hot Springs in the Yellowstone National Park Prepared Under the Direction of Captain H. M. Chittenden… Washington, D.C. Norris Peters Co. Map is very detailed, showing terrain, roads and buildings. Surveyed by Weston Small, Junior Engineer. Outline color. (41.5 x 33.3")
3) Map of the Yellowstone National Park With the Adjacent Hoodoo Region. Washington, D.C. 1880 [1903]. This black and white map details the entire park and areas to the east, including some areas labeled as "unexplored." (17.3 x 15.8")
4) Mammoth Hot Springs, Yellowstone National Park, WY. Ter. Washington, D.C. 1880 [1903]. This is a bird's-eye view in black and white. List along the bottom names 12 important formations and buildings, all keyed to view. (11.3 x 6.3")

References:

Condition: A

The maps are very good to fine.