(en) Birmingham Museum of Art, Birmingham Museum of Art : guide to the collection, Birmingham Museum of Art, , 272 p. (ISBN978-1-904832-77-5, lire en ligne), p. 68
(en) Warren L. d'Azevedo, « Some Historical Problems in the Delineation of A Central West Atlantic Region », Annals of the New York Academy of Sciences, vol. 96, , p. 512–538 (DOI10.1111/j.1749-6632.1962.tb50146.x)