Petroleum industry 3 Aquatic sports 1 Armories 1 Boat & ship industry 1 Bottle industry 1 Bridges 1 Canals 1 more ... Canteens (Wartime, emergency, etc.) 1 Chemical industry 1 Defense industry 1 Demonstrations 1 Dredging 1 Employees 1 Firearms industry 1 Guards 1 Hat trade 1 Industrial buildings 1 Labor unions 1 Leather industry 1 Lifesaving 1 Lumber trade 1 Machinery 1 Night 1 Office buildings 1 Ordnance industry 1 Parades & processions 1 Railroads 1 Rowing 1 Sailors 1 Social aspects 1 Stevedores 1 Strikes 1 Suicide victims 1 Telephone operators 1 Textile industry 1 Vessels 1 War work 1 Warships 1 Water pollution 1 Women 1 less ...