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United States Geological Survey
United States relief map / U.S. Geological Survey, J. W. Powell director ; compiled by Henry Gannett ; engraved by U.S.G.S.
[Washington] : U.S. Geological survey, [tra 1890 e 1910]
Langille, Harold Douglas <1874-1954>
Northern portion of the Cascade Range forest reserve, Oregon (Mount Hood and vicinity) showing land classification / by H. D. Langille ; Julius Bien & Co. lith.
[Washington] : U.S. Geological Survey, 1901
Dodwell, Arthur - Rixon, Theodore F.
Southern portion of the Cascade Range forest reserve, Oregon, showing land classification / by Arthur Dodwell and Theodore F. Rixon ; Julius Bien & Co. lith.
[Washington] : U.S. Geological Survey, [1903]