Columbia River
Rises in Upper Columbia Lake, lat. 50 deg. 10', long.
115 deg. 50', and flows into Pacific Ocean. Total length about 1150 miles.
Its mouth was discovered by Robert Gray, of Boston, May, 1792, and named
by him after his vessel. It was first reached overland by Lewis and Clark,
in 1805; and first explored throughout its entire length by David
Thompson, of the North West Company, 1807-1811. Its principal branch is
the Kootenay. =Index=: (Sir James Douglas era) Carver's "River of Oregon," 19; Russian
colony projected at, 44; named by Gray, 57; Fraser raised mistaken for,
59; Lewis and Clark on, 67.