Lewis and Clark Trail : national historic trail, Ill., Mo., Kan., Neb., Ia., S.Dak., N.Dak., Mont., Id., Wash., Ore. / National Park Service, U.S. Department of the Interior
Published:
[Washington, D.C.?] : The Service, [1991]
Physical Description:
1 sheet : color illustrations, color map ; 60 x 42 folded to 10 x 21 cm