Although "In the Mood made Miller a millionaire, he never collected anything from the proceeds of the sales. He was bound by a no royalty contract, and thus only received $175 for the tune. Later, however, a deal was negotiated whereby Miller's estate was to receive royalties from "In the Mood and other Victor recordings. Miller, of course, was already gone, having vanished overseas in December of 1944 while serving in the military and leading a hugely successful band. He never lived to see the end of the era that he helped shape.
Simon, George T. Glenn Miller and His Orchestra. New York: Da Capo Press, 1974.
Schuller, Gunther. The Swing Era New York: Oxford University Press, 1989.
"The Swing Era: 1940-1941. Time Life Records. 1970.