Glen Canyon Dam, AZ? Control by U. S. Coast and Geodetic Survey. Surveyed in 1921. Engraved and printed by the U. S. Geological Survey." Dam crossection. Prime meridian: GM. Relief: contour lines. Graphic Scale: Miles. Projection: Plane. Printing Process: Lithography.
Type
image
Format
image/jpeg
Extent
1 map ; hand col. ; 134 x 1067 cm., sheet 165 x 112 cm.
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