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.
Adams Transit Co. - existed in 1920's to 1930's.
Fleetville Bus Lines - suburban based in Hellam, no further information.
James A. Tollinger - served Red Lion, Dallastown, Stewartstown, Glen Rock.
Lincoln Bus Lines - served Hanover, Littlestown, Abbottstown, Gettysburg, East Berlin, York, Frederick MD.
York East Prospect Busses - existed in 1930's.