Libretti

[Contratrombone64]

I know this is a place devoted to music. My question is concerning libretti. Is there a similar venture for these, out-of-copyright booklets?

[azumbrunn]

There are already other books on IMSLP such as L. Mozart's or Spohr's "Violinschule" or works on music theory.

I think posting libretti along with opera- and oratorio-scores would add to the value of the database.