Born in Caldwell, Idaho Territory, Coffin moved with his family to nearby Boise in 1898. He attended Boise High School and then transferred back east to Phillips Exeter Academy in New Hampshire. Coffin then entered Yale University‘s Sheffield Scientific School, where he was a member of St. Anthony Hall, and was graduated from the law department of Yale University in 1910. He was admitted to the bar in 1911 and was a deputy county attorney for Ada County in Boise and in 1913 became an assistant attorney general of Idaho. Coffin relocated east across the state to Pocatello in December 1915 and went into private practice. He served in the U.S. Navy in World War I as a Petty officer, second class in the aviation division.
Only fifteen months into his first term, Coffin was struck by an automobile on a driveway in the south grounds of the U.S. Capitol on June 4, 1934, and suffered a fractured skull. He died four days later at Providence Hospital in Washington, D.C., and was buried on June 14 in Pocatello.
This article incorporates public domain material from the Biographical Directory of the United States Congress website http://bioguide.congress.gov.
- “Aileen Franklin Coffin (1897–1953)”. Find a Grave. Retrieved March 4, 2013.
- “Representative Coffin dies Friday at Capitol”. Lewiston Morning Tribune. Associated Press. June 9, 1934. p. 1.
- “Coffin funeral plans not made”. Spokane Daily Chronicle. Associated Press. June 9, 1934. p. 2.
- “Office of the Clerk: Election statistics”. U.S. House of Representatives. Retrieved March 11, 2013.
- “Struck by auto”. Lewiston Morning Tribune. Associated Press. June 6, 1934. p. 1.
- “Thomas Coffin rites are held”. Spokane Daily Chronicle. Associated Press. June 14, 1934. p. 1.