Lincoln Logs is the name of a children's toy consisting of notched miniature logs, used to build miniature forts and buildings. They were invented by John Lloyd Wright, son of the architect Frank Lloyd Wright. Lincoln Logs were inducted into the US National Toy Hall of Fame in 1999. The logs measure three quarters of an inch (roughly two cm) in diameter. Analogous to real logs used in a log cabin, Lincoln Logs have notches in their ends so that small model log buildings can be created. Additional parts of the toy set include windows and doors, which bring a realistic appearance to the final creation. Later sets included the addition of animals and human figures designed to the scale of the buildings. The toy sets were originally made of 100 percent wood, with varying colors of roof pieces. By the 1970s, the company had unsuccessfully introduced sets made entirely of plastic. The sets were soon reverted to the classic real wood on all their sets.
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