Geological Survey (U.S.) and Douglas, Edward Morehouse, 1855-1932. United States Department of the Interior, Geological Survey ; E.M. Douglas, geographer Relief shown by contours and spot heights. "Elevations and t... The Survey.
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Geological Survey (U.S.) and Douglas, Edward Morehouse, 1855-1932. Relief shown by contours and spot heights. "E.M. Douglas, Geographer in charge. Topography by Richard T. Evans. Triangulation by H.L. Baldwin, Jr. ... U.S. Geological Survey.
Geological Survey (U.S.), Douglas, Edward Morehouse, 1855-1932, and Evans, R. T. (Richard Tranter), b. 1881. U.S. Geological Survey ; E.M. Douglas, geographer in charge ; triangulation by T.M. Bannon ; topography by Richard T. Evans. "Surveyed in 1902." Re... U.S. Geological Survey.
Geological Survey (U.S.), Douglas, Edward Morehouse, 1855-1932, and Matthes, François, 1874-1948. U.S. Geological Survey ; E.M. Douglas, geographer in charge ; topography by Franc̜ois E. Matthes. Surveyed in 1902-1903. "Contour interval 50 feet....
Geological Survey (U.S.), Douglas, Edward Morehouse, 1855-1932, and Matthes, François, 1874-1948. Department of the Interior, U.S. Geological Survey ; E.M. Douglas, geographer. Relief shown by contours and spot heights; depths shown by soundings... The Survey.
Geological Survey (U.S.) and Douglas, Edward Morehouse, 1855-1932. Relief shown by contours. Contour interval 50 feet. "E.M. Douglas, Geographer in charge ; Topography and triangulation by Fred McLaughlin ; surveye... U.S. Geological Survey.