- 1964
- 1997
- 1966
- Doc & Merle Watson
- John Hartford, Tony Rice & Vassar Clements
- Sam Bush, David Grisman, Ronnie McCoury, Jesse McReynolds, Bobby Osborne, Ricky Skaggs, Frank Wakefield, Buck White & Del McCoury
- Fred Cockerham, Oscar Jenkins & Tommy Jarrell
- John Hartford