Additional bus companies, listed as existing during 1930's, are mentioned in the WPA American Guide Series of state guidebooks.
Fox Bus Lines - served Lake City, Briceville, Oak Ridge, Jacksboro, Fork Mountain.
E. R. Moody Bus Line - based in Heloise, served Dyersburg to Caruthersville MO.
National Bus System - connected Nashville with Antioch, Providence.
Oliver Bus Lines - existed in 1930's, served Memphis.
Stoney Creek Bus Lines - suburban served Stoney Creek area near Elizabethton.
Valley Forge Bus Line - served Elizabethton and Valley Forge.