The Texas Zephyr was a named passenger train operated by the Colorado & Southern Railway and the Fort Worth & Denver Railway (both subsidiaries of the Chicago, Burlington & Quincy Railroad). The train was originally designated number 1 southbound, and number 2 northbound. As a result of it losing its U.S. Mail railway post contract, the Fort Worth & Denver abandoned all passenger service in 1967, the Texas Zephyr making its last run on September 11 of that year.