Charles Clément. Géricault, étude biographique et critique avec le catalogue raisonné de l'œuvre du maitre. 3rd ed. [1st ed. 1867]. Paris, 1879 [reprinted in Lorenz Eitner, "Charles Clément: Gericault," New York, 1974, pp. 293, 451, no. 68], calls it "Lions" and describes it as "trois lions et trois lionnes accroupis ou couchés près de débris et d'ossements," 47 x 58 1/2 cm, in the collection of M. Schickler; in his supplement, Eitner suggests that the work described by Clément might be a different picture (Ref. Bazin 1997, no. 2357).
Philippe Grunchec. L'opera completa di Gericault. Milan, 1978, p. 109, no. 144, ill., calls it "Leoni accucciati," in a private collection, Paris; identifies it as Ref. Clément 1879, no. 68, stating that this connection and the quality of execution attest to the authenticity of this picture; considers the version in the Louvre (Ref. Bazin 1997, no. 2353) weak by comparison.
Germain Bazin with documentation by Élisabeth Raffy. "Regard social et politique: Le séjour anglais et les heures de souffrance." Théodore Géricault, étude critique, documents et catalogue raisonné. 7, Paris, 1997, pp. 32–33, 153, no. 2354, ill., calls it "Groupe de lions" and catalogues it as author unknown, the result of his not having seen it in person, but notes the high regard in which Grunchec [Ref. 1978] held this work.