- David Foil
- Opera and Choral Scores
- Giacomo Puccini
- Frank L. Houghton
- Brooke Halpin
- Black Dog Publishing
- George Sharpley
- Peter Morrissey
- Mila Boutan
- Miriam Ellis
- Lorenzo Da Ponte
- Wina Gunn
- Nancy Shipman
- Luigi Illica
- Evan A. Copp
- Frederick Michelan
- R. David Rightmire
- John Louis DiGaetani
- Georg Friedrich Treitschke
- Joseph Ferdinand Sonnleithner