Mud Volcano Trail, Yellowstone National Park.

Bibliographic Details
Format:	Book
Language:	English
Published:	[Yellowstone National Park, Wyoming] : Yellowstone Library and Museum Association in cooperation with the National Park Service, U.S. Department of the Interior, [1972?]
Subjects:	Nature trails > Yellowstone National Park > Guidebooks. Mud volcanoes > Yellowstone National Park > Guidebooks.

Cushing: Stonestreet (Does not check out)