Thomas Spencer Crago (August 8, 1866 – September 12, 1925) was a Republican member of the U.S. House of Representatives from Pennsylvania.
He was not a candidate for renomination in 1920, but was subsequently elected to the Sixty-seventh Congress to fill the vacancy caused by the death of Mahlon M. Garland.
He was appointed special assistant to the Attorney General of the United States on March 7, 1923, and was assigned to the War Frauds Division.
He served as vice president of the Union Deposit & Trust Co. of Waynesburg, Pennsylvania.
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