Product. They also designed and built the ride systems for It's a Small World (1964/66), Pirates of the Caribbean, Adventure Through Inner Space (1967), and the Haunted Mansion (1969). Arrow has also been credited for improving the guidance system for the Submarine Voyage (1959) and prototyping a four-track version of Space Mountain for Walt Disney World in Orlando. Dana Morgan, the son of co-founder Ed Morgan, recalled that Arrow was involved in fourteen of the Walt Disney World attractions, including Dumbo the Flying Elephant and Peter Pan, Pirates of the Caribbean, the parking lot trams, Sky Buckets and the Prince Charming Carousel. The last ride system Arrow may have worked on for Walt Disney World would have been Big Thunder Mountain Railroad, which opened November 15, 1980, two months before the merger with HUSS Maschinenfabrik which formed Arrow-Huss. Non-Disney rides The 1947 carousel at Alum Rock was later moved to the Happy Hollow Park & Zoo in 1964, where it still operates as the King Neptune's Carousel. Karl and Ed also set up a separate company called Easbey which won a contract with the city of Oakland, California, to install rides at the Children's Fairyland at Lake Merritt, which was built in 1950. The Flecto Carousel was built by Arrow in 1950, although it was not installed at Fairyland until 2002. In 1955, Arrow built a demonstration children's park called Playtown, next to Palo Alto's Town and Country Village Shopping Center, where they demonstrated new rides including a miniature train, boat, "Arrow-plane," and carousel. They also had a demonstration park across the bay near San Leandro and another in Los Altos. On August 21, 1960, a tragic accident occurred at Playtown involving the son of Frank Freidel, a visiting professor at Stanford, known for his extensive biography of Franklin Roosevelt. While Frank's wife Madeleine was buying tickets for the miniature train ride, their year old son Phillip wandered off, sat down on the tracks and was hit by the train, suffering massive head and leg injuries. He was pronounced dead on arrival at the Palo Alto-Stanford Hospital. Playtown closed soon after. Arrow developed the Mystery Island Banana Train ride for Pacific Ocean Park, which was one of the opening-day rides in 1958. Arrow also developed an extensive Alice in Wonderland ride for Blackpool Pleasure Beach, which opened in 1961. For the 1962 Seattle World's Fair, Arrow created the "Space Whirl",