Stringham, E. J. Listening to music creatively, 1943
His Stefan in love, c1991 p. 2 ("other books... under the name of George Selcamm")
New Grove dict. of Amer. mus. (Machlis, Joseph; b. Aug. 11, 1906, Riga, Latvia; writer on music; has written several novels under his own name and the pseudonym George Selcamm)
Gaylord Library on WWW (Machlis, Joseph; d. Oct. 17, 1998, at 92)