The Katy was the first railroad to enter Texas from the north. Eventually, the Katy's core system linked Parsons, Fort Scott, Junction City, Olathe, and Kansas City, Kansas; Kansas City, Joplin, Columbia, Jefferson City, and St. Louis, Missouri; Tulsa; Wagoner; and Oklahoma City, Oklahoma; Dallas, Fort Worth, Waco, Temple, Austin, San Antonio, Houston, and Galveston, Texas. An additional mainline between Fort Worth and Salina, Kansas, was added in the 1980s after the collapse of the Chicago, Rock Island and Pacific Railroad; this line was operated as the Oklahoma, Kansas and Texas Railroad (OKKT). Former Rock Island trackage rights acquired by the Katy also gave it access to Lincoln and Omaha, Nebraska and Council Bluffs, Iowa.