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__?