Lincoln Logs are a children's building toy invented by John Lloyd Wright (1892–1972) around 1916 and first marketed to the public in 1924. From their introduction, each set contained a number of wooden logs in various lengths that could be fitted together to make log houses and other buildings. This simple toy proved so successful that by the end of the 1990s more than a half-million sets were sold every year.

John Lloyd Wright was the second son of famous architect Frank Lloyd Wright (1867–1959), best known for his Prairie Style architecture and unique houses. John learned design by working with his father on the Midway Gardens in Chicago, Illinois, and on the Imperial Hotel in Tokyo, Japan. In Japan, Wright saw firsthand how the Japanese used wood construction in a very intricate and beautiful way. Wright also loved children and their toys and games. When he was twenty-five years...