Comments made by the six test subjects in the relay assembly test room from 1927-1930. The comments are sorted into six categories: rest periods, hours, holidays and vacations; production, earnings, repairs and type; supervision and test room...
Collectors. Business correspondence and papers (1871-1935) of Fritz Sittell relating to the Choctaw Coal and Railway Company, the Choctaw Trading Company, Sittell's other business interests, and the development of the town of McAlester, Oklahoma;...