- Arthur Smith & The Kingston Trio
- Trini Lopez
- Don Cherry & Willie Nelson
- Pete Seeger, Bess Hawes, Woody Guthrie, Burl Ives, Studio Chorus, Union Boys, Holly Wood, Dock Reese, Lou Kleinman, Lee Hays, Butch Hawes, Fred Hellerman, Ronnie Gilbert & Weavers, The
- Roger Whittaker
- The Brothers Four