Main routes generally still existed in 1976.
Wells Bus Line - operated 1974-1985
Original route: Mountain Home-Little Rock
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.
Brocato Bus Line - operated until 1957
Original route: Helena-Brinkley
Central Bus Lines - operated until 1946
Original route: Marianna-Brinkley-Newport/Heber Springs
Dardenelle Transfer Co. - operated until 1957
Original route: Dardenelle-Russellville
Dean Bus Line - operated until 1954
Original route: Pine Bluff-De Witt
Eagle Transportation Co. - operated until 1943 (to Southwestern Greyhound Lines)
Original route: Little Rock-Fordyce-El Dorado
Harrison Motor Coaches - operated until 1974
Original route: Harrison-Mountain Home-Norfolk Dam
Helena Bus Line - operated until 1956
Original route: Helena-Clarksdale MS
Holmes Coach Line - operated until 1949
Original route: Dierks-Hope
National Bus Line - operated until 1950
Operated various directions from Little Rock
Inter City Transit Co. - operated 1949-1971
Original route: Little Rock-Russellville-Fort Smith
Smith Coach Line - operated until 1954
Original route: Warren-Camden
Stewart-Gray Bus Line - operated until 1954
Original route: Batesville-Little Rock
1948-1954 was Stewart Bus Line
Sutton Bus Line - operated until 1951
Original route: Russellville-Harrison
1944-1946 service suspended
1946-1951 was Hughes Bus Line