This is an oil portrait of John Wesley Powell painted by
N.H. Busey. Powell served as the director of the Geological
Survey from 1881 to 1894. Although he was the second director
of the survey, he is perhaps the most famous. He participated
in several mapping and exploration expeditions to the southwestern
United States, and the national center in Reston is named after
him. He is distinguishable in art because he is missing his
right arm, which he lost in the Civil War.