Additional bus companies, listed as existing during additional years or decades, are mentioned in old City Directories, and in the WPA American Guide Series of state guidebooks.
Beaumont Sour Lake & Western Bus Line - existed in 1930's.
Meadowbrook Transportation Co. - existed in 1930's to 1940's.
Tunnel Transit Co. - city service in Baytown.
Rocket Motor Coaches - connected Houston with Pasadena, Alta Vista, Laporte, Morgans Point, Baytown, vicinity.
Wharton-Bay City Bus Line - served Wharton to Bay City.