1908. Geological Survey (U.S.). Relief shown by contours and spot heights on region map.; Battlefield map is intended to show the field as it was at or about the time of the battl... The Survey (Washington, D.C).
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1910. Geological Survey (U.S.). Relief shown by hachures.; Printed by A. Hoen & Co., Baltimore. 32 x 51 Centimeters Scale 1:62,500 General Map Collection. The Survey (Washington, D.C).
1904. Barnard, E. C. (Edward Chester), 1863-1921. Shows Alaska with areas of coal bearing rocks in red and coal seams in green.; Includes legend.; Relief shown by contours and spot heights.; Inset:... The Survey (Washington, D.C).