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.
Suburban and interurban bus companies listed in the Russell's Official National Motor Coach Guide, which was primarily a resource for intercity bus lines.
Reading Transportation Co./Reading Trailways (served Philadelphia and Allentown and Reading and Shamokin and Harrisburg and Lancaster)
Frantz Bus Lines - suburban served Pottsville, Mechanicsville, Port Carbon, Mount Hope, York Farm.
Ringtown-Shenandoah Bus Lines - suburban served Ringtown, Patersonville, Shenandoah.
Schuster's Bus Lines - city service in Pottsville, existed in 1930's to 1968, coexisted with East Penn Transportation Co.
Schuylkill Transit Co. - served Pottsville, St. Clair, Gilberton, Mahanoy City, Frackville, Shenandoah, Girardville, Ashland.
Paul B. Williams Bus Co. - suburban served Mahanoy City, Morea, Park Place, Trenton, Buck Mountain.
Billig Bus Lines - served Hazleton, Delano, Mahanoy City, Lofty, Inakake.
Bowman Bros. - served Gratz, Pottsville, Spring Glen, Sacramento, Valley View, Hegims, Tremont.
Mahanoy City-Tamaqua Bus Lines - served Mahanoy City, Tamaqua.