(Documentary) (grateful thanks)
"John Wayne: The Life and Legend". New York: Simon & Schuster. ISBN-10: 1439199582; ISBN-13: 9781439199589
Did You Know?
The backstage musical came about because a lot of people then and now had a problem with people breaking into song within an ostensibly realistic setting. Where does the orchestra come from? In a backstage musical we're on stage, so that's not a problem.
Ghost-writer of Robert Wagner's autobiography.