The Art of The Puzzle Astounding and Confounding ; Jigsaw Puzzles ; Their Long, Popular Reign ; Mechanical Puzzles ; Their History and Their Challenge - Williams, Anne D.; Katonah Museum of Art; Slocum, Jerry; Shortz, Will ([New York] : [Rosenthal], 2000)
Keywords: Puzzle, verschiedene; Spielzeuggeschichte 1785-