Missouri Pacific was down to a two dozen daily trains (a dozen in each direction) in 1966. The railroad had dropped all but three of its named trains, and two of those names were really the same train while one name was applied to three separate trains.
The Texas Eagle, trains 1 & 2, still ran on the railroad’s premiere route from St. Louis to San Antonio and featured sleepers, a diner, and a dome car. At least part of the train continued to Laredo (and into Mexico) as the Aztec Eagle, but it was still numbered trains 1 & 2. Coach-only 3 & 4 connected St. Louis with Fort Worth, while trains 7 & 8 went to Fort Worth with a “grill-coach” and continued with just coaches to El Paso as trains 27 & 26.
Two other trains were also called the Texas Eagle: 21 & 22 branched at Fort Worth for New Orleans, while 41 & 42 branched at Palestine, Texas for Houston. Both trains carried sleepers, though the New Orleans sleeper only got as far as Fort Worth. The Houston train had a “diner-coach” while the St. Louis-San Antonio and Fort Worth-New Orleans trains had a dome car.
The St. Louis-Kansas City route was down to three trains a day. The Colorado Eagle had been dropped just before this timetable was issued, while the Missouri River Eagle, which once went as far as Omaha, now terminated at Kansas City but carried the Colorado Eagle‘s dome car as well as a diner-parlor car. Of the other two trains, one went overnight with sleeping cars but no diner; the other was an afternoon train (to complement the Eagle‘s morning schedule) that had a diner-parlor car but no dome.
The only other trains were 31 & 32, which connected Little Rock with Alexandria, LA with coaches & sleepers; and overnight but coach-only 52 & 53 trains between New Orleans and Houston. Though the cover of this timetable says “West-Southwest,” suggesting the possibility of another timetable showing other routes, that appears to have been just a slogan as these seem to be all of the routes that the MP and its Texas & Pacific subsidiary had in 1966.