It started with a pincushion and a puzzle. In 1921, Washburn Crosby, the makers of Gold Medal flour, held a national contest. If customers completed a jigsaw puzzle and sent it in, they would be mailed a prize: a pincushion shaped like a flour sack. The Minnesota-based company was soon deluged in completed puzzles, along with something they didn’t expect: hundreds of letters from home cooks, asking for kitchen advice. The company took on the challenge gamely, responding to all the inquiries. According to Susan Marks, the author of Finding…
