BurrPuzzles
BurrPuzzles
http://www.research.ibm.com/burrpuzzles/
John Rausch
John Rausch
http://www.johnrausch.com/
Puzzle Museum
Puzzle Museum
http://www.puzzlemuseum.com/
Trevor Wood Puzzels
Puzzles. a gallery of individually hand crafted mechanical puzzles made from fine and exotic woods by trevor wood (t.w. puzzles) for the discerning collector.
http://www.puzzles.force9.co.uk