Dean Martin and Ricky Nelson clowning on the set of the Howard Hawks 1959 release movie, 'Rio Bravo' in which they co-stared with John Wayne. This was Ricky's first movie. Supporting cast included Angie Dickinson, Walter Brennan, and Ward Bond.
Dean Martin and Jerry Lewis were together in a total of 17 comedy movies from 1949 to starring in 14 of those. -Had Dean stayed with Jerry he never would have realized his own comedic talent. See The Dean Martin Variety Show