Toward the end of its life, the KCS "Southern Belle" usually ran with a baggage car, two coaches, a 14 roomette/4 double bedroom sleeper, and the ex-NYC lunch counter-lounge-observation. The coaches came from the road's 1965 P-S order, one of the last pre-Amtrak intercity car orders, and the sleepr was one of the road's 1948/1949 acquisitions.

The "Texas Zephyr", at the end of its life in 1967, included a coach, sleeper and one of the CB&Q's 1940-vintage diner-lounge-observations, along with whatever head traffic was running at the time. The remaining cars from the 1936 "Denver Zephyr" consists, which had begun running on the "TZ" in 1957 after the 1956 "DZ" re-equipping, had disappeared around 1965.

The Q's diner-lounge/parlor-observations included cars built for the "General Pershing", "Silver Streak" and "Sam Houston" Zephyrs. These unique cars were 88 feet, 7 inches end to end, almost as long as a contemporary piggyback flat. They later ran on the "Kansas City Zephyr" as well. One of them (Silver Star, from the "General Pershing Zephyr") is reported to have survived as a private car on a minehaul railroad in Australia.

(Information is from Fred Frailey's book, "Twilight of the Great Trains")