- Creator:
- James Sowerby, 1756–1822, British
- Title:
- A Porpoise?
- Date:
- undated
- Materials & Techniques:
- Graphite on medium, slightly textured, cream wove paper
- Dimensions:
- Sheet: 7 3/4 × 12 3/4 inches (19.7 × 32.4 cm)
- Credit Line:
- Yale Center for British Art, Paul Mellon Collection
- Copyright Status:
- Public Domain
- Accession Number:
- B1978.43.73