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.
Chattanooga-Birmingham Bus Line - existed in 1930's to 1940's.
Chattanooga-Chickamauga Bus Line - existed in 1940's.
Chattanooga-Dalton Bus Line - existed in 1930's to 1940's.
Chattanooga-Knoxville Bus Line - existed in 1930's to 1940's.
Chattanooga-Nashville Bus Line - existed in 1930's to 1940's.
Chattanooga-Sparta Bus Line - existed in 1930's to 1940's.
Chickamauga Lines - existed in 1930's.
Ford Bus Line - existed in 1950's.
Thomas Lines - existed in 1930's to 1940's.