Other Violas
- Thomas Kennedy
- Joannes Baptista Guadagnini
- Mathias Heinicke
- Paul Collins
- Gusset David
- George Craske
- Jeffery J. Gilbert
- attr. Romeo Antoniazzi
- Jan Pawlikowski
- Frantisek Kriz
- Charles Buthod
- H. C. Silvestre Neveu
- Neuner & Hornsteiner
- Werner Barth
- Helen Michetschlager
- Ross viola
- unlabelled viola 1937