The Firefly was a named passenger train of the St. Louis – San Francisco Railway. At various times, it served St Louis, Missouri, Tulsa and Oklahoma City, Oklahoma, Kansas City, Missouri, and Fort Scott, Kansas.
The SLSF introduced the Firefly on December 10, 1939 over the Kansas City—Tulsa—Oklahoma City route. The Firefly was the Frisco's first streamliner, intended to compete with the Santa Fe.[1] The train's last run between Fort Scott and Tulsa took on place on 22 May 1960; between Fort Scott and Kansas City it ran combined with the Sunnyland.[2] The Firefly was the last Frisco train serving the Tulsa-Fort Scott route.[3]