External Resources

• ITA Journal, Jan 1990
• ​ITA Journal July 2002
• Jay Friedman "Ride in Style"
• Online Trombone Journal
• John Engelkes Masterclass
• Thomas Leyendecker Masterclass
• Alexander von Puttkamer Masterclass (Tuba)
• Jeffery Reynolds Excerpts CD
• Ralph Sauer Excerpts CD