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Annotated Ancient Mariner
The Rime of the Ancient Mariner »

Codes, Ciphers And Secret Writing
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Classic Brainteasers
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An Introduction To The Philosophy Of Science
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Logik Unterm Galgen
Ein Mathematical in 20 Problemen »

Calculus Made Easy
Being A Very-Simplest Introduction To Those Beautiful Methods Of Reckoning Which Are Generally Called By The Terrifying Names Of The Differential Calculus An... »

Optical Illusion Play Pack
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Are Universes Thicker Than Blackberries?
Discourses on Godel, Magic Hexagrams, Little Red Riding Hood, and Other Mathematical and Pseudoscientific Topics »

The Snark Puzzle Book
Seventy-five brain teasers relating to Lewis Carroll's nonsense poem The Hunting of the Snark.. »