By William R. Hartston
By Teresa Paddington
By Martin Toseland
By Caroline Taggart
By Collins Puzzles
By Telegraph Media Group
By Amy Rickman
By Marc Dawson
By Griffiths, John
By Carlton Books
By Lauren Johnson
By Taggart, Caroline
By Martin Manser, Grace Roper, Emma Redfern, Jim Hansen
By Schott, Ben
By Capri, Diane
By Martin Cloake, Adam Powley
By National Geographic Kids Magazine, National Geographic Kids
By Ripley
By The Economist
By Fid Backhouse & Richard Widdows
By Standage, Tom
By Ayto, John
By Ash, Russell
By Paul Terry
By Winn, Christopher
By Merle Good
By Ehrlich, Eugene
By Pat Cullen
By The Diagram Group