Sound stages of the 1930s and 1940s needed lots of stage sets, and at MGM, George Gibson was the man in charge. “The backdrops he created appeared in films such as The Wizard of Oz (1939), An American in Paris (1951) and Brigadoon (1954). His backdrops were as large as 60ft x 150ft (18m by 45m) and so realistic that the audience often did not realise the setting was a soundstage.” – BBC