 He was admitted to the bar in Hillsboro, Texas in 1901 and entered banking in 1908 when he became vice president of the Citizens National Bank of Ballinger, the bank merged with the Ballinger First National Bank in 1909 and Traylor became its president.He went on to oversee several banks around the United States and became president of the American Bankers Association in 1926 and later the first president of the First Union Trust and Savings Bank in 1928 which would go on to become Chicago's largest bank under his leadership in 1931.He was a strong proponent of a world bank and was a part of the American delegation to the conference that set up the Bank of International Settlements.