Theme

•  Agriculture (2)
•  Alcohols (4)
•  Banks-Finance (2)
•  Canals (1)
•  Chemistry (1)
•  Concrete (1)
•  Construction (10)
•  Earthenware (2)
•  Electricity (1)
•  Food (2)
•  Gas (1)
•  Glass (6)
•  Heating (2)
•  Leather, furs (2)
•  Mechanics (1)
•  Metal (5)
•  Mines : coal (1)
•  Mines and quarries (5)
•  Optics (1)
•  Paper, cardboard industry (2)
•  Press (1)
•  Railroads (2)
•  Real estate (1)
•  Rubber (3)
•  Sugar (5)
•  Textiles (15)
•  Theaters (1)
•  Trade (2)
•  Weapons, military (1)
•  Wood, forest (1)