Mechanical Puzzle Collection @Lilly Library

Puzzle fans will love trying to solve the hands-on challenges from our collection—and learning from our Curator of Puzzles about how puzzle designers develop their deviously difficult creations. Get inspired for your next project!

The Jerry Slocum Collection of Mechanical Puzzles is the largest of its kind in the world, with over 35,000 puzzles that range from Japanese wooden boxes to Victorian era amusements to innovative laser-cut and 3D-printed designs.