SH 37 was designated as a route on April 13, 1918 from Clarksville to Lufkin.

[3] On June 24, 1931, it was extended north to the Oklahoma state line, replacing SH 66.

[6] On September 26, 1939, the stretch from Mineola to Tyler was transferred to U.S. Highway 69 (Cosigned with since 1934), with the remaining route continuing to the present.

SH 37A was designated on January 19, 1920 as a spur from Tyler to Troup.

[12] Media related to Texas State Highway 37 at Wikimedia Commons