Guidebook of the western United States.
Geological Survey (U.S.)
Campbell, Marius Robinson,
Govt. Print. Off.,
pt. A. The Northern Pacific route, with a side trip to Yellowstone National Park, by M.R. Campbell and others-pt. B. The Overland route with a side trip to Yellowstone Park, by W.T. Lee [and others]-p
Its Bulletin; no. 611-614, 707, 845