Orfeo ed Euridice. Libretto. Public domain libretto, Library of Congress

composta dal signor di Calzabigi ; e messo in musica dal signor cavaliere Gluck. (statement of responsibility)
U.S. RISM Libretto Project.
Sticker with notation "23/9" to left of the word "composta"--title page.
Personaggi: ORFEO. La signora Borgondio -- EURIDICE. La signora Seidler -- AMORE. La signora Eunicke--p. 2.
References: Catalog of the Albert Schatz collection of opera librettos, S3910.
Performance: Berlin, Gran Teatro Reale, 1821. (venue)
With: Orfeo ed Euridice. Libretto / Gluck, C. Berlin : [s.n., n.d.] Bound subsequent to publication. Both numbered S3910. DLC