The Book of Ingenious & Diabolical Puzzles – Review - 1994
Rob's Puzzle Page - What's New
The Book of Ingenious and Diabolical Puzzles: Jerry Slocum, Jack Botermans, Will Shortz: 9780812921533: Amazon.com: Books
Rob's Puzzle Page - Books
Title: "Creative Puzzles of the World " Author(s): Pieter van Delft and Jack Botermans Publisher: over 1000 puzzles. - ppt download
Mechanical puzzle - Wikipedia
Mechanical puzzle - Wikiwand
JERRY SLOCUM - AbeBooks
WoodPuzzles - Sam Loyd's Square to Cross
Slocum and Botermans Books
The Book of Ingenious and Diabolical Puzzles - Jerry Slocum, Jack Botermans - Google Books
Rob's Puzzle Page - What's New
Gemani Games and Puzzles, Puzzle Book shop
Rob's Puzzle Page - Books
Puzzles Old and New: How to Make and Solve Them: Slocum, Jerry, Botermans, Jack: 9780295965796: Amazon.com: Books
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Rob's Puzzle Page - What's New
Rob's Puzzle Page - Pattern Puzzles
Rob's Puzzle Page - What's New
Slocum and Botermans Books
Creative puzzles of the world book by Jack Botermans
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