began work on Disneyland, it also began expanding its other entertainment operations. In 1950, Treasure Island became the studio's first all-live-action feature, soon followed by 20,000 Leagues Under the Sea (in CinemaScope , 1954), Old Yeller (1957), The Shaggy Dog (1959), Pollyanna (1960), Swiss Family Robinson (1960), The Absent-Minded Professor (1961), and The Parent Trap