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|Material Type:||Government publication, National government publication|
|All Authors / Contributors:||
Henry Gannett; Anton Karl; Laurence Thompson; Geological Survey (U.S.); Geological and Geographical Survey of the Territories (U.S.)
|Notes:||Relief shown by contours and spot heights.
"Contour interval 100 feet. Datum is mean sea level."
"This map made from surveys without spirit level control."
On verso: "The topographic maps of the United States" from the Director, United States Geological Survey, Washington, D.C., November, 1937, "Effective on and after October 1, 1946," and table of standard symbols.
|Description:||1 map : color ; 45 x 35 cm, on sheet 54 x 43 cm.|
|Cartographic Mathematical Data:||Scale 1:62,500 ;; polyconic projection; (W 107Â°15Ê¹--W 107Â°00Ê¹/N 39Â°00Ê¹--N 38Â°45Ê¹).|
|Series Title:||[15 minute series (topographic)]|
|Other Titles:||Anthracite sheet, Colo
|Responsibility:||United States Department of the Interior, Geological Survey ; Henry Gannett, chief geographer ; triangulation by the Hayden Survey ; topography by Anton Karl and Laurence Thompson.|