Otis F. Glenn as a United States Senator from the State of Illinois; He was born in Mattoon, Illinois on August 27, 1879.
After graduating law school in 1900 from the University of Illinois at Urbana-Champaign, he began practicing law in Murphysboro. He served as the State's Attorney for Jackson County from 1906 to 1908 and again from 1916 to 1920 when he was elected to the State Senate until 1924. When Frank L. Smith resigned from the U.S. Senate in 1928 after twice having his credential refused by the Senate, Glenn was elected in a special election and served out Smith's term. When Glenn ran for re-election in 1932, he was defeated. He ran, unsuccessfully, in 1936 as well. Upon returning to Illinois, he established a law practice in Chicago.
Glenn died on March 11, 1959 in Portage Point, Manistee County, Michigan.
Preceded by: Frank L. Smith (not allowed to take a seat) U.S. Senator (Class 3) from Illinois 1928 - 1933 Served alongside: Charles S. Deneen, J. Hamilton Lewis Succeeded by: William H. Dieterich