[4] By 1892, when the T&FS had built another 16 miles north from the Red River to Wilton, Arkansas, the Kansas City, Pittsburg and Gulf Railroad gained control of the railway and set about using the T&FS as the Texas link in its planned route between Kansas City and the Gulf of Mexico.

South of Shreveport, the T&FS also constructed a line from the Louisiana-Texas border on the Sabine River southward to Beaumont and Port Arthur, Texas, a new city created as the marine terminus of the route.

[4] In the wake of a financial crisis, the KCP&G was reorganized as the Kansas City Southern Railway on April 1, 1900.

In 1934, in a landmark decision, the Supreme Court upheld an Interstate Commerce Commission ruling that overrode the Texas law requiring in-state railroad headquarters.

[5] Subsequently, the Texarkana and Fort Smith Railway was leased to the Kansas City Southern in 1934 and merged on December 31, 1943.