Here are the mechanical puzzle designers and promoters who have sent in information about their puzzle designs, sales, auctions, etc.:
Raf Peeters
Bernhard Schweitzer
Will Shortz
Jerry Slocum
Martin Watson
Raf Peeters
Bernhard Schweitzer
Will Shortz
Jerry Slocum
Martin Watson
Hard work and research went into providing this free content. If you appreciate the effort, please donate to help support my continued work. Thank you!
