Suburban and interurban bus companies listed in the Russell's Official National Motor Coach Guide, which was primarily a resource for intercity bus lines.
Sterling Stages (to Ashtabula and Sharon PA, until 1984)
Warren-Newton Falls Transportation Co. (to Newton Falls and Leavittsburg, until 1962)
Warren-Salem Transit Line (to Salem, until 1950)
Niles-Howard Transit Lines - connected Niles with Howland.
Suburban Coach Lines - connected Warren with Middlefield, Cortland, West Farmington.