The original Twin T-Ps Restaurant was opened in Seattle in 1937. Herman Olson, who registered this design for a "resort building", operated the original Twin T-P. In 1942 Walter Clark bought the business and established a chain of 22 restaurants. Col. Harland Sanders, of Kentucky Fried Chicken fame, worked on his Original Recipe in the Twin T-Ps kitchen. Learn more about the restaurant and see some photos at HistoryLink. 1937. Invented by Herman E. Olson.