Drawing of 2 anatomical cross sections of turtle (5 x 4 cm., 6 x 4 cm.)Repository: Ernst Mayr Library, Museum of Comparative Zoology, Harvard UniversityCall number: bAg 168.60.10 (11)c
Drawing of turtle (rear and front views) (3 x 14 cm., 3 x 15 cm.)Repository: Ernst Mayr Library, Museum of Comparative Zoology, Harvard UniversityCall number: bAg 168.60.10 (11)g
Drawing of turtle and anatomical cross section (14 x 21 cm., 10 x 3 cm.)Repository: Ernst Mayr Library, Museum of Comparative Zoology, Harvard UniversityCall number: bAg 168.60.10 (11)e