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3E Lewis Carroll Puzzles - University of Hawaiʻi
Lewis Carroll’s Logic Challenges – Denise Gaskins' Let's Play Math
The Game of Logic - Lewis Carroll Resources
The game of logic : Carroll, Lewis, 1832-1898 - Archive.org
Math - Lewis Carroll Society of North America
The Game of Logic - Wikipedia
Lewis Carroll logic puzzles - What's new
Lewis Carroll Logic Puzzles - Mathorama
The Project Gutenberg E-text of The Game of Logic, by Lewis Carroll
Lewis Carroll's games and puzzles : Carroll, Lewis, 1832-1898 : …