Elverson Puzzle Company
Jacob's Revenge bottle puzzle, the Log Stacker puzzle box, and Bandit the Slot Machine card game. Pennsylvania, USA. Also order toll-free or by mail. http://www.elversonpuzzle.com/
Kadon Enterprises, Inc.
Games and puzzles like Pentominoes, Penrose Tiles, Tessellations, and other abstract strategy games.
Jigsaw Tree
Wide range of jigsaw puzzles for adults and children. UK site ships to US if administration team is contacted via email first.
Mr Puzzle Australia
Wooden puzzles and brainteasers. View by degree of difficulty. Printed solution with all puzzles.
Tessellations
Maker of Puzzellations puzzles (with foam rubber tiles), posters, and kaleidoscopes inspired by M.C. Escher, as well as mathematicians like Penrose and Mandelbrot.
The CalmPlex
Mechanical tessellated puzzle, an 8x8 chessboard a 4x4x4 cube.