December 21, 2012 · Iss. 114, pg. 94-96 · by: Rudolf Ulrich
Variety (US)
"Dr. Hugo Riesenfeld, Pioneer in De Luxe Presentations, Dies at 60"
September 13, 1939
New York Times (US)
"Hugo Riesenfeld, Music Conductor; Concert Master of Manhattan Opera Company, 1907-11, Dies in Los Angeles at 60; Directed Theatres Here; Developed Film Presentation While at Rivoli, Rialto and Criterion from 1917-25"