3 fish watercolors plus 1 anatomical cross-section pencil drawing (2 x 5 cm., 2 x 6 cm., 2 x 6 cm., and 3 x 2 cm.)Repository: Ernst Mayr Library, Museum of Comparative Zoology, Harvard UniversityCall number: ARC 209-128
1 fish watercolor (3 x 5 cm.) and 1 pencil sketch of a man (5 x 4 cm.)Repository: Ernst Mayr Library, Museum of Comparative Zoology, Harvard UniversityCall number: ARC 209-094