Q: What are some errors made in puzzle books?
A: Charles W. Trigg, Mathematical Quickies, Dover, 1985, #93 [Fence?
Hubert Phillips, Caliban's Problem Book: Mathematical, Inferential and Cryptographic Puzzles, T. De La Rue & Co Ltd., London, 1933 [Calibans Will?
Angela Dunn, ed., Mathematical Bafflers, Dover, 1980, p. 112 and David Wells, The Penguin Book of Curious and Interesting Puzzles, Penguin, 1992, #373 & #554 [Hundred?
Dodgson, Charles L. (AKA Lewis Carroll), Pillow-Problems, Macmillan, 1895, #5 [Apriori?