Filters
Aha Box - Allan Boardman
Ball in the Cage - unknown
Lateral Thinking - Brian Young
Star Burr - Allan Boardman
Mini Star Burr - Allan Boardman
Parcel Post - unknown
Pegasus - Tad Muroi
Japanese Burr - unknown
Extreme Boxed Burr - Frans De Vreugd
Mini Windmill - Dan Feldman
Mini Three Piece Burr - unknown
New Knot in Bottle - Tad Muroi
Unhappy Childhood - Stewart Coffin
Fifth Avenue - Nob Yoshigahara
12-Piece Altekruse - William Altekruse
Four Pentomino Problems - Solomon W. Golomb
French Puzzle Brain - unknown
Pocoloco - Vaclav Obsivac
Loaded Die - Allan Boardman