Amitié à l'épreuve. Libretto. Public domain libretto, Library of Congress

les paroles sont de MM***, & Favart ; la musique est de M. Grétry. (statement of responsibility)
Libretto by Voisenon and Favart, based on a tale by Marmontel. Cf. Loewenberg.
Signatures: A-C⁸.
Cast: p. [2].
The bars of music for a "romance" on p. 45-46; otherwise without the music.
With a "divertissement" on p. [47].
Cf. Sonneck, O.G.T. Librettos, v. 1, p. 85.