'Labor unions Ohio Dayton History 20th century' in subject Labor unions -- Ohio -- Dayton -- History -- 20th century in subject [X]
Minutes (administrative records) in subject [X]
Local transit -- Employees -- Labor unions -- Ohio -- Dayton in subject [X]
Transport workers -- Ohio -- Dayton in subject [X]
Membership lists in subject [X]
St. John Transportation Company -- Employees in subject [X]