1901. Geological Survey (U.S.). Relief shown by contours.; "Surveyed in 1898."; "Jon H. Renshawe, Geographer in charge. Topography by E.C. Bebb."; "Datum is mean sea level." 33 x ... U.S. Geological Survey (Washington, D.C).
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1901. Geological Survey (U.S.). Oriented with north toward upper right.; "Henry Gannett, Chief topographer, H.M. Wilson, geographer in charge ; Topography by U.S. Lake Survey, Fra... U.S. Geological Survey (Washington, D.C).