George Wheeler (explorer)
George Montague Wheeler was an American pioneering explorer and cartographer, leader of the Wheeler Survey, one of the major surveys of the western United States in the late nineteenth century. He graduated from West Point in 1866, ranked sixth in his class, and he was commissioned as a Lieutenant in the US Army Corps of Engineers. His first exploration was in 1869, when Wheeler was 27160years old, and on the staff of the Commanding General of the Department of California of the US Army.
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Source: Wikipedia