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Title East Portal quadrangle, Colorado : 7.5 minute series (topographic) / produced by the United States Geological Survey.
Imprint Washington, D.C. : U.S. Geological Survey, 1965.


 Maps  3700s 24    AVAILABLE
Description 1 map : col. ; 58 x 44 cm.
Note Gift of Dr. Turner.
Topography from aerial photographs by photogrammetric methods. Aerial photographs taken 1953. Field check 1958.
"N3952.5 -- W10537.5/7.5."
"AMS 4863 I NW -- Series V877."
Includes quadrangle location map.
Subject Colorado -- Maps.
Grand County (Colo.) -- Maps.
Gilpin County (Colo.) -- Maps.
Boulder County (Colo.) -- Maps.
Arapaho National Forest (Colo.) -- Maps.
Roosevelt National Forest (Colo.) -- Maps.
Genre Topographic maps.
Other Title Filing title: East Portal, Colo.