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- Mining machinery (5)
- Mining machinery--Michigan--Detroit (5)
- Salt mines and mining (5)
- Salt mines and mining--Michigan--Detroit (5)
- Salt workers (5)
- Salt workers--Michigan--Detroit (5)
- Ford, Henry , 1863-1947 (4)
- Inventors--Portraits (3)
- BuildingsMichigan Central Railroad Company (2)
- Chaplin, Charlie , 1889-1977 (2)
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