33 books • 2 series
Top 101 Inventions Of All Time! - Intriguing Facts & Trivia About History's Greatest Inventions!
Superstitions, Folklore, Myths & Legends - The Origins, History & Facts of Popular Wives' Tales
Why Do We Say That? 101 Idioms, Phrases, Sayings & Facts! A Brief History On Where They Come From!
250 World War 2 Facts For Kids - Interesting Events & History Information To Win Trivia
1144 Random, Interesting & Fun Facts You Need To Know - The Knowledge Encyclopedia To Win Trivia (Amazing World Facts, #1)