Studios, pp. 181–192. Hoffmann, Frank, Encyclopedia of Recorded Sound, NewYork & London : Routledge, 1993 & 2005, Volume 1. Cf. pp. 209–213, article on
William and Zuckerman, Mary Ellen (1991) The Magazine in America, 1741–1990 Oxford University Press, NewYork, ISBN 0-19-505127-0 Parsons, D. W. (1989) The