| 1961 – present|
OK 37 at Albion
| US 69 in Mineola|
State Highway 37 is a state highway that runs from the Oklahoma border near Albion to Mineola in the northeast corner of the state.
Texas State Highway 37 Wikipedia
SH 37 was originally proposed in 1919 as a route from Clarksville to Lufkin. By 1926, it was pared back, with the portion from Jacksonville to Lufkin transferred to SH 40. Everything north of Mt. Vernon was either cancelled or transferred to SH 66. By 1933, it was extended north to the Oklahoma border, replacing SH 66. By 1938, the stretch from Mineola to Tyler was transferred to U.S. Highway 69, with the remaining route continuing to the present.
SH 37A was designated by 1926 as a spur from Tyler to Troup. By 1933, this became an extension of SH 110.