Additional bus companies, listed as existing during 1930's, are mentioned in the WPA American Guide Series of state guidebooks.
Camp Chaffee Transit Co. - connected Fort Smith with Camp Chaffee.
May Bus Line - connected Searcy with Rose Bud.
Doyle Bus Line - served Batesville, Cushman, Mt. Pleasant, Sage, Melbourne.
Pruitt Bus Line - based in Batesville, served Walnut Ridge, Hardy, Newport.
So. Baptist College - served Pocahontas, College City, Walnut Creek.
R. K. Adams Bus Line - served Searcy, Brinkley, Cotton Plant, Des Arc, Heber Springs, Shirley, Clinton.
Brinkley-Marianna Bus Line - no further information.
Delta Motor Coaches - served Parkin, Earl, Neuhardt, Hughes, West Memphis, Forrest City, Widener, Madison, Turrell, Crawfordsville, Memphis TN.
Safeway Bus Lines - served Newport, McCrory, August, Cotton Plant, Brinkley.
Fox Bus Line - connected Russellville with Hot Springs.
Malvern-Hot Springs Transportation Co. - no further information.
Mountain Pine-Blakeley Dam Bus Line - based in Hot Springs, no further information.
Razorback Bus Line - served Huntsville, Springdale, Fayetteville, Kingston, Marble.
Bus companies operating over longer distances than the above suburban and interurban companies, but not listed in the Russell's Guide.
Columbia Motor Coaches - intercity served Magnolia to Minden LA.
Arroway Coaches - existed in 1930's, served Little Rock and Jonesboro.
Gray Transportation Co. - existed in 1930's, served El Dorado.
Nance Motor Coaches - existed in 1930's, served Texarkana.