Wilson, Alexander,
"1. Long-tailed duck; 2. Female; 3. Summer d.; 4. Green-winged teal; 5. Canvas-back d.; 6. Red-headed duck; 7. Mallard"
(1824).
Brown Olio.
Brown Digital Repository. Brown University Library.
https://repository.library.brown.edu/studio/item/bdr:40885/