Johnson was elected to the Oklahoma House of Representatives in 1940 and re-elected in 1942. He resigned from the Oklahoma House in January, 1942 to enlist in the United States Army following the Japanese attack on Pearl Harbor and the U.S. entry into World War II. On a three-day pass, he married Imogene Storms in Okemah on December 5, 1942. While he entered the Army as a private, in May 1946 he was discharged as a captain.[1] Upon his return to Oklahoma, he resumed his practice of law.
Johnson ran for and was elected to Congress (from Oklahoma's 4th Congressional district) as a Democrat in 1946, defeating incumbent Lyle Boren in the primary election, and served from January 3, 1947, to January 3, 1949.[2] He considered running for re-election in 1948, but instead chose to run for the U.S. Senate. After losing the Democratic nomination, he retired from Congress after serving only one term.
After leaving Congress, Johnson continued to work in the field of law. He was the neutral arbitrator for the National Mediation Board in 1949 and 1950. He served as an attorney in the Office of the Solicitor for the U.S. Department of the Interior in Washington, D.C., from 1961 to 1967. He was the chairman of the Oil Import Appeals Board (representing the Department of the Interior) from 1967 to 1969. He served as the attorney in the Solicitor's Office, Department of the Interior, assigned to the Muskogee, Oklahoma field office (from 1969 to 1972).[3] He relocated back to Okemah, Oklahoma, where he remained until his death.
Death and personal life
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Johnson died of congestive heart failure in Okemah, Okfuskee County, Oklahoma, on February 10, 1983.
Johnson and his wife Imogene had a son, Glen D. Johnson Jr., who served as Oklahoma's youngest Speaker of the House, then served in higher education—for ten years as president of Southeastern Oklahoma State University, then as chancellor of Oklahoma's state system of higher education. His death was just three weeks after his son was sworn in as a member of the Oklahoma House of Representatives.[citation needed]