"Amos 'n' Andy" was officially transferred by NBC from the Blue Network to the Red Network in 1935, although the vast majority of stations carrying the show remained the same. Several months later, Gosden and Correll moved production of the show from NBC's Merchandise Mart studios in Chicago to Hollywood. After a long and successful run with Pepsodent, the program changed sponsors in 1938 to Campbell's Soup; because of Campbell's closer relationship with CBS, the series switched to that network on April 3, 1939.