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.
For some of the earliest bus companies, listed in early reports of the Ohio Public Utilities Commission, a first year of operations is listed.
Cadiz Bus Co. - began operations in 1922, existed in 1930's.
Canton Hartville Lines - existed in 1930's to 1950's.
Canton Motor Coach - existed in 1930's.
Canton-Ravenna-Warren Lines - existed in 1930's to 1940's.
Canton Transportation Co. - began operations in 1922, served Canton and suburbs.
Clark Bus Co. - connected Alliance with Marlboro, Sunset Park.
E & M Transit Co. - connected Canton with East Canton, Reverse, Robertsville, Minerva, Alliance.
East Canton Transit Co. - existed 1920 to 1940's.
Intercity Coach Lines - connected Canton with Reedurban, Genoa, Massillon, existed in 1940's to 1950's.
Red Eagle Bus Co. - existed in 1940's.
Salisbury Transportation Co. - existed 1926 to 1930's.
Suburban Transit Lines - no further information.