The Dewey Decimal system was created by Melvil Dewey in 1876. This system classifies and lists both fiction and nonfiction text under 10 major selections then has lots of subsections numerically going down to decimals.  This system is used all over the world.  

Dewey Decimal Classifications 

000-099 Computer Science, Informational and General Works

• Computer programing 

• Cell Phones

• Coding

• Dictionaries and Thesaurus

100 - 199 Philosophy

• Myths and Legends

• Optical Illusions

• Feelings

• Dreams

• Places ghosts may dwell

200 - 299 Religion

300 -399 Social Sciences

• Government

• Money

• Elections

• Scouting

• Military

• Education

• Customs

• Costumes / Legends/ folklore / fairy tales

• Etiquette

• Transportation

400-499 Language

• Dictionaries and Thesaurus

• English Grammar

• Forane languages

500-599 Natural Sciences

• Math 

• Experiments / Chemistry

• Weather

• Plants and Trees

• Land and water forms and environments

• Space

• Wild animals

600 - 699 Technology

• Human body

• Medicine/ Doctor

• Gardening

• Home Economics

• Cooking

• Woodworking

• Inventions

• Vehicles / Trains / Spaceships / ATV’s …..

• Pets

• Farm Animals

700 -799 The Arts and Recreation

• Art  / Crafts

• Music

• Magic

• Sports

• Graphic Novels

• Camping

• Hunting

800 - 899 Literature

• Many types of writing

• Speeches

• Plays

• Poetry

• Jokes / Riddles

900- 999 Geography & History

• Maps

• Biography

• Travel

• Nations

• States

• History

• Exploration