Clyde W. Tombaugh papers, 1892-2004.
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Lowell Observatory, an independent, nonprofit, astronomical research organization, was founded by Percival Lowell in Flagstaff, Arizona in 1894. From the description of Records [microform], 1894-1916. (Unknown). WorldCat record id: 78961648 Lowell Observatory was founded by Percival Lowell in 1894 at Flagstaff, Arizona. From the description of Correspondence, 1894-1916. (American Philosophical Society Library). WorldCat record id: 122523528 From the guid...
Clyde William Tombaugh was born February 4, 1906 on a farm near Streator, IL. The family moved to a farm in Kansas in 1922. He was hired to conduct planet-search photography in 1929 at the Lowell Observatory in Flagstaff, AZ. On February 18, 1930, Tombaugh discovered the ninth planet Pluto. The official announcement of the discovery was made March 13. The discovery led to awards and a scholarship to the University of Kansas where he started as a freshman in 1932, receiving his B.A. in 1936. In 1...