Drawing of 3 anatomical cross sections of turtle (8 x 3 cm., 8 x 2 cm., 8 x 3 cm.)Repository: Ernst Mayr Library, Museum of Comparative Zoology, Harvard UniversityCall number: bAg 168.60.10 (26)k
Drawing of 3 anatomical cross sections of turtle (7 x 3 cm., 7 x 3 cm., 7 x 3 cm.)Repository: Ernst Mayr Library, Museum of Comparative Zoology, Harvard UniversityCall number: bAg 168.60.10 (26)l
Drawing of turtle (6 x 15 cm.) and 3 views of its headRepository: Ernst Mayr Library, Museum of Comparative Zoology, Harvard UniversityCall number: bAg 168.60.10 (19)l