| A.W. Hinchcliff Lumber | Strongsville | OH |
| Babcock & Wilcox | East Liverpool | OH |
| Babcock & Wilcox | Brilliant | OH |
| Babcock & Wilcox | Dayton | OH |
| Babcock & Wilcox | Stratton | OH |
| Babcock & Wilcox | Willoughby | OH |
| Babcock & Wilcox | Cincinnati | OH |
| Babcock & Wilcox | Barberton | OH |
| Babcock & Wilcox | Canton | OH |
| Babcock & Wilcox | Cleveland | OH |
| Babcock & Wilcox | Ashland | OH |
| Babcock & Wilcox | North Canton | OH |
| Babcock & Wilcox | Alliance | OH |
| Bailey Meter | Cleveland | OH |
| Bailey Meter | Wickliffe | OH |
| Bakelite | Riverview | OH |
| Bakelite | Marietta | OH |
| Baker-Raulang | Cleveland | OH |
| Baker Wood Preserving | Marion | OH |
| Baldwin | Cincinnati | OH |
| Baldwin-Ehret-Hill | Cincinnati | OH |
| Baldwin-Lima-Hamilton | Hamilton | OH |
| Ballonoff Home Products | Shelby | OH |
| Baltimore & Ohio Railroad | Canton | OH |
| Baltimore & Ohio Railroad | Willard | OH |
| Baltimore & Ohio Railroad | Cincinnati | OH |
| Baltimore & Ohio Railroad | Cleveland | OH |
| Baltimore & Ohio Railroad | Lorain | OH |
| Baltimore & Ohio Railroad | Newark | OH |
| Baltimore & Ohio Railroad | Dayton | OH |
| Baltimore & Ohio Team Track | Athens | OH |
| Bamburger Reinthol | Cleveland | OH |
| Bangor Punta | Cleveland | OH |
| Banister | Hubbard | OH |
| B & A Plumbing & Heating | Sandusky | OH |
| Barberton Aluminum | Barberton | OH |
| Barberton Citizens Hospital | Barberton | OH |
| Barberton City Schools | Barberton | OH |
| Barberton High School | Barberton | OH |
| Barberton Land & Hotel | Barberton | OH |
| Barberton Laundry | Barberton | OH |
| Barberton Manufacturing | Barberton | OH |
| Bard Manufacturing | Bryan | OH |
| Bardons & Oliver | Cleveland | OH |
| Barnes Manufacturing | Mansfield | OH |
| Barney & Smith Car | Dayton | OH |
| Barrett Brewing | Cleveland | OH |
| Barrett Chemical | Youngstown | OH |
| Barrett Chemical | Toledo | OH |
| Barrett Chemical | Ironton | OH |
