Jack Stuart and his Collegians

From the 1938 novel Young Man with a Horn (1938) by Dorothy Baker. Book 3, chapt. 1:

The summer Rick Martin was twenty he was playing first trumpet for Jack Stuart and his Collegians at the Rendez-Vous Ballroom in Balboa, thirty miles down the coast from Los Angeles. "Collegians" was no idle boast: Jack Stuart himself was a collegian from way back; he had attended the University of Oregon on three separate occasions. The second trumpet was a bona fide third year music student at Berkeley, and the drummer had gone to U.S.C. for one semester. These three made up the college contingent of the Collegians; the other seven were of college age, and that was as far as it went.

See also Rick Martin.