Glacial map of Montana east of the Rocky Mountains /

Bibliographic Details
Main Author:	Colton, Roger B. (Roger Burnham), 1924-
Corporate Author:	Geological Survey (U.S.)
Other Authors:	Lemke, Richard W. (Richard Walter), 1913-2003, Lindvall, Robert M. (Robert Marcus), 1916-
Format:	Government Document Map
Language:	English
Published:	Washington, D.C. : U.S. Geological Survey, 1961.
Series:	Miscellaneous geologic investigations ; map I-327.
Subjects:	Geology > Montana > Maps.

Description
Item Description:	"Base from U.S. Geol. Survey Montana state map, 1923." Includes "Explanation" and "Source of data." Inset maps: Sketch map showing major segments of preglacial drainage courses -- Inferred direction of glacial movement during successive ice advances -- Sketch map of Montana showing location of maps at the scale of 1:250,000. Cartographic material.
Physical Description:	1 map : color ; 74 x 137 cm. folded to 22 x 25 cm.