Big Bend National Park.

Bibliographic Details
Corporate Author:	Geological Survey (U.S.)
Format:	Map
Language:	English
Published:	[Washington, D.C.?] : U.S. Dept. of the Interior, Geological Survey, [1969]
Edition:	Road and trail system ... rev. in 1969.
Subjects:	Big Bend National Park (Tex.) > Maps.

Evans: Maps (2nd floor) (Does not check out)