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Newspaper industry
1
Newspaper vendors
1
Parades & processions
2
Petroleum industry
1
Pickets
3
Police
1
Political conventions
1
Power plants
1
Public utility companies
1
Publishing industry
1
Railroad passenger cars
1
Refuse disposal
1
Restaurants
1
Riot control
2
Sailors
1
Sewing
1
Shipping
1
Social aspects
1
Steel industry strikes
1
Stevedores
1
Strikes
Swimming
1
Taxicabs
1
Transportation industry
1
Trucks
1
Vessels
1
Veterans
1
War work
1
Warehouses
1
Wine
1
Women
1
World War, 1939-1945
1