6 maps on 1 sheet : color ; sheet 130 x 81 cm, folded to 22 x 27 cm
OCLC
ocm30088135
Cartographic Data
Scales differ
(W 80⁰--W 75⁰/N 42⁰--N 40⁰).
"This index is designed to inform map users of the various map series, special maps, and map byproducts produced and distributed by the U.S. Geological Survey"--Back panel.
Panel title.
"1-SS-37 ... 10-93"--Back panel.
"Supersedes 2-36 ... 2-90"--Back panel.
Information contained in these index maps is valid indefinitely.
Refer to the companion Catalog of topographic and other published maps which lists names, dates, and prices of maps currently available, and is updated and reissued periodically.
Primary map series, 1:24 000 scale -- County map series, 1:50 000 scale -- 30 x 60 minute series, 1:100 000 scale -- 1 x 2 degree series, 1:250 000 scale -- Sectional map series, 1:2 000 000 scale -- State map series, 1:500 000 and 1:1 000 000