27. François Bonvin, Study of Rocks
| Artist | François Bonvin, French, Paris 1817–Saint-Germain-en-Laye 1887 |
| Title, Date | Study of Rocks, 1847 |
| Medium | Charcoal on gray paper |
| Dimensions | 4 1/16 × 5 7/8 in. (10.3 × 14.9 cm) (image) |
| Inscriptions + Marks | Lower right: f. B. 13 Août / 47 |
| Provenance | [Galerie Fischer-Kiener, Paris; to Weisberg]; Yvonne and Gabriel Weisberg, Minneapolis |
| Credit Line | Promised gift of Gabriel P. and Yvonne M.L. Weisberg, Minneapolis |