Step 1 : Introduction to the question "The son of what famous man invented Lincoln Logs?"
Lincoln Logs were invented by John Lloyd Wright, second son of the architect Frank Lloyd Wright. The mold for the toy was based on the architecture of the Imperial Hotel in Tokyo, designed by the inventor's father. The foundation of the hotel was designed with interlocking log beams, which made the structure "earthquake-proof". A century after their creation, Lincoln Logs continue to be popular in a high-tech world. Over 100 million sets have been sold worldwide, and Lincoln Logs were inducted into the National Toy Hall of Fame in 1999.