What years did John Wesley Powell serve as the director of the U.S. Geological Survey?
1881–1894
1885–1898
1875–1888
1890–1903
Answer
John Wesley Powell served as the director of the U.S. Geological Survey from 1881 to 1894. During his time as director, he oversaw the survey's work in the American West, including the mapping of the Colorado River and the Grand Canyon.
Exploring John Wesley Powell: A Voyage into American Geology