"Essays, which extended through the first three volumes of the Ornithological biography to sixty in number are here collected with the omission only of the last 'Remarks on the form of the toes of birds,' for the first time in a single volume."--Introd.
Bibliography
"Brief bibliography of the works of John James Audubon" p. vii-viii.
Reproduction
Microfiche. Chicago : Library Resources,inc., 1970. 1 microfiche ; 8 x 13 cm. (Library of American civilization ; LAC 12719)