A Brief History of Puzzles: 120 of the World's Most Baffling Brainteasers from the Sphinx to Sudoku - William Hartston (Hardback) 07-11-2019
Even More Things That Nobody Knows: 501 Further Mysteries of Life, the Universe and Everything - William Hartston (Paperback) 03-11-2016
Sloths: A Celebration of the World's Most Misunderstood Mammal - William Hartston (Paperback) 03-10-2019
The Bumper Book of Things That Nobody Knows: 1001 Mysteries of Life, the Universe and Everything - William Hartston (Hardback) 02-11-2017
The Things that Nobody Knows: 501 Mysteries of Life, the Universe and Everything - William Hartston (Paperback) 01-11-2012
