Datasets:
- Archery
- Astronomy
- Beekeeping
- Books_for_Boys_and_Girls
- Botany
- Brewing_and_Distilling
- Bridges_and_Dams
- Butchering
- Canning
- Cheese_and_Butter
- Christmas
- Coffee_and_Tea
- Cooking_and_Cookbooks
- Cycles_Bi_Tri_Motor
- Drilling
- Embalming
- Engineering_General
- Engineering_Hydraulics
- Firearms_Books
- Forging_and_Casting
- Grapes_Wine_Raisins
- Heavy_Industrial_Machinery
- Hemp_and_Flax
- Journalism
- Knitting_Lace_Needlepoint
- Leather
- Livestock_Sheep
- Machine_Tools
- Medical_Emergency
- Medical_Surgery_1900-1922
- Medical_X_Rays
- Miscellaneous
- Mushrooms
- Musical_Instruments
- NBC
- Painting
- Pottery
- Poultry
- Printing
- Railroads
- Rat_Control
- Refrigeration
- Sanitation
- Scientific_American_Series_2
- Silk_Culture
- Sliderules
- Steam_Engines
- Surveying
- Teaching_Arithmetic
- Teaching_Civics