Main routes generally still existed in 1976.
Colorado Springs Limon Transportation Co. - operated 1947-1983
Original route: Colorado Springs-Limon
1977-1983 was Crown Transportation
Wilderness Transit Co. - operated 1956-1987
Original route: Craig-Grand Junction
Bus companies generally listed in the July 1942 Russell's Guide or the 1952 Mass Transportation's Directory, and their predecessor and successor companies. This list is somewhat arbitrary and provides a general overview.
Colorado Motorway - operated 1923-1975
Original route: Denver-Fort Collins/Greeley/Silver Plume
Cripple Creek-Victor & Colorado Springs Stage Co. - operated until 1958
Original route: Cripple Creek-Victor-Colorado Springs