Review of the Fossil Fauna of the Desert Region of Oregon, with a Description of additional Material collected there. R. W. Schufeldt. Bulletin of the American Museum of Natural History, VoL. XXXII, Aut, VI, pages 123-178, New York, 1913 (link retrieved 9 April 2016)
doi.org
Review: Shufeldt on Fossil Birds from Oregon. Reviewed Work: A Study of the Fossil Avifauna of the Equus Beds of the Oregon Desert by R. W. Shufeldt. Review by: J. A. A., The Auk, Vol. 10, No. 4 (Oct., 1893), page 344, doi:10.2307/4067816
