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Subject
- Agricultural industries--United States--History.1
- Construction workers.1
- Engineering.1
- London and North Eastern Railway.1
- Railroad engineers.1
- Railroad trains.1
- Sugar beet industry--United States--History.1
- Sugar beet industry.1
- Sugar factories--United States--History.1
- Sugar trade--United States--History.1
- Sugar--Manufacture and refining--Equipment and supplies.1
- Sugar.1