Audubon, John James.

1842. The birds of America, vol. 4.

Bacon, C. C.

1891. A large set or series of the red-headed woodpecker. Oologist, vol. 8, p. 32.

Bailey, Florence Augusta Merriam.

1896. Notes on some of the birds of southern California. Auk, vol. 13, pp. 115-124.

1902. Handbook of birds of the Western United States.

1923. Birds recorded from the Santa Rita Mountains in southern Arizona. Pacific Coast Avifauna, no. 15.

1928. Birds of New Mexico.

Bailey, Harold Harris.