Inaugurated on August 23, 1940,[1] the streamlined train ran from Denver Union Station to Fort Worth and Dallas, Texas, replacing the heavyweight Colorado Special.

[4] The train was pulled between Denver and Fort Worth by pairs of General Motors Electro-Motive Division stainless steel E5 diesels.

To allow adequate time for servicing the diesel locomotives in Fort Worth, a FW&D 550 class 4-6-2 "Pacific" type steam locomotive shuttled the train between Fort Worth and Dallas.

Though older than the original Texas Zephyr equipment, they offered more luxurious amenities.

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 10 of that year.