(New Categories will be Red) 

Accounting Engineering-Electrical Livestock-Rabbits and Cavies Scientific American
(Series 1)
Aeroplanes Engineering-General Livestock-Sheep Scientific American
(Series 2)
Airships Engineering-General Livestock-Swine Sewage
Archery Engineering-Hydraulics Machine Tools Sewing
Architecture Engraving and Woodcuts Mechanical Drawing Shelter
Astronomy Ethics Medical Courses-US Army Shipbuilding
Baking Farming Medical-Anesthesia Shoemaking
Banking Farming-Corn Medical-Diagnostics Shorthand
Basketry Farming-Fish Medical-Emergency Silk Culture
Bee Journal (American) Farming-Grapes_Wine_Raisins New Medical-Hypnotism New Sliderules and Abacus
Bee Journal (British) Farming-Potato and Sweet Potato Medical-Medicine 1900-1922 Smithing
Beekeeping Firearms-Books Medical-Microscopy Steam Engines
Beekeeping 2 Firearms-Manuals Medical-Nursing 1900-1921 Stone and Masonry
Berries Fishing Medical-Obstetrics 1900-1922 Surveying
Boilermaker Food Medical-Surgery 1900-1922 Survival-Individual
Bookbinding Forestry Medical-Surgery 2 Teaching
Botany Forging and Casting Medical-X-Rays Teaching-Arithmetic
Boy Scout Manuals Formulas Meteorology Teaching-Civics
Brewing and Distilling Geodesy Misc Teaching-Phonics
Bridges and Dams Geography Monasticism Teaching-Readers
Butchering Glassmaking Morality Teaching-Readers-McGuffey
Canning Gunpowder and Explosives Mushrooms Telegraph and Telephone
Cheese and Butter Making Hatmaking Musical Instruments Thanksgiving
Chemistry Heating Navigation Tobacco
Christmas Heavy and Industrial Machinery NBC Toys
Clockmaking Hemp and Flax Opium Trapping and Hunting
Coal and Mining Herbalism Optometry Turpentine, Glue, Solvents
Coffee-Tea History-American Painting and Drawing Veterinary
Conduct of Life Home Economics Papermaking Wagon and Coach Building
Construction Horses Photography Weaving
Cooking and Cookbooks Journalism Pottery Welding
Cotton Knitting-Lace-Needlepoint Poultry Wind and Water
Cycles (Bi-Tri-Motor) Laundry Primers Wood Magazine
Dentistry Leather Printing Wood-Carpentry
Drilling Leisure-Games and Sports Radio 73 Magazine Wood-Carving
Economics Leisure-Recreation Magazine Radio Wood-Furniture
Embalming Leisure-Whist Railroads Work Magazine
Encyclopedias Lithography Refrigeration  
Engineering-Drainage Livestock-Cattle Sanitation