It took me awhile to figure out why some Rock Island timetables of the 1950s had black logos on a red background while others had red logos on a black background. It appears the black logos were on spring-summer timetables while the red logos were on fall-winter timetables.

Click image to download an 13.1-MB PDF of this 20-page timetable.

Otherwise there aren’t many changes between the spring and fall 1959 timetables. The only one I see is that 15 minutes had been added to the schedule of the southbound Twin Star Rocket between Minneapolis and Houston, while 10 minutes were added northbound.