Dewey Follett Bartlett Sr. (March 28, 1919 – March 1, 1979) was an American politician who served as the 19th governor of Oklahoma from 1967 to 1971, following his fellow Republican, Henry Bellmon. In 1966, he became the first Roman Catholic elected governor of Oklahoma, defeating the Democratic nominee, Preston J. Moore of Oklahoma City. He was defeated for reelection in 1970 by Tulsa attorney David Hall in the closest election in state history. He was elected to the United States Senate in 1972 and served one term. In 1978, he was diagnosed with lung cancer and did not run for reelection that year. He died of complications of lung cancer two months after retiring from the Senate in 1979. Early life Dewey Follett Bartlett was born to David A. and Jessie Bartlett in Marietta, Ohio, and attended schools in Marietta and Lawrenceville, New Jersey. Bartlett graduated from Princeton University with an undergraduate degree in geological engineering in 1942 after completing his senior thesis, titled "Water-flooding an oil formation", under the supervision of Glenn L. Jepsen and Kenneth DePencier Watson. Bartlett was the president of his senior class while a student at Princeton. Following graduation from Princeton, Bartlett enlisted in the Navy; then served in the U.S. Marine Corps as a dive bomber during World War II in the Pacific theatre. After the war, he moved to Tulsa, Oklahoma, where he held various jobs in farming, ranching, and the oil industry, inheriting ownership of the Tulsa-based Keener Oil and Gas Company from his father, David A. Bartlett. Political career Prior to becoming governor, Bartlett served in the Oklahoma Senate from 1962 to 1966. As governor, he made major changes to the Oklahoma Department of Corrections, pushed for school consolidation, and vetoed a school code bill. In 1970, he was the first Oklahoma governor eligible to seek a second term. In the general election, he was challenged by then-Tulsa County Attorney David Hall. In the closest gubernatorial election in state history, Hall unseated Bartlett by a vote of 338,338 to 336,157. Following his defeat for reelection as governor, he served for one term in the U.S. Senate from 1973 to 1979 after winning the seat previously held by Democrat Fred R. Harris. He narrowly defeated U.S. Congressman Ed Edmondson in the 1972 election riding on President Richard Nixon's coattails. During his tenure in Congress, he took a conservative stance on most