Question: In which year did this American pioneering mountaineer and writer, after whom this scattering of glaciers and snowfields located on the southern flank of Mount Rainier in Washington was named, climb Mount Rainier?
Sentence (from "Brentwood, Maryland"): Brentwood is less than 1 mi away from Washington, D.C. The municipality of Brentwood is located just outside the northeast boundary of the District of Columbia and surrounded by the communities of Mount Rainier, Cottage City, North Brentwood, and the nearby Hyattsville.
Relevant evidence: No