Tosca
Subtitle: Musikdrama in drei Akten
By: von V. Sardou, L. Illica, G. Giacosa.  Duetsch von Max Kalbeck.  Musik von G. Puccini.
Contributors: Illica, Luigi, 1857-1919.; Giacosa, Giuseppe, 1847-1906.; Kalbeck, Max, 1850-1921.
Publisher: G. Ricordi
Published: 1899
Place of publication: Leipzig
Language: ger
Number of pages: 56
Work titles: Tosca.
Notes: "Printed in Italy."

Libretto actually by L. Illica and G. Giacosa only.  Cf. Loewenberg.