Scales vary. Six transparent overlays in envelope inserted. Signed by William T. Pecora, Under Secretary of Interior, W.A. Radlinski, Associate Director, U.S.G.S., Arch C. Gerlach, Chief Geographer, and William B. Overstreet, Chief National Atlas Project and is number 13 of 14 copies. Available also through the Library of Congress Web site as a raster image. Copy 13; Exchange; Exchange with Dr. Walter W. Ristow and his son Stephen F. Ristow. Acquisitions control no. 97-31 Copies 1 and 4 NOS
Geological Survey (U.S.); Gerlach, Arch C.
1970
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