Opere Ornithology of the United States Exploring Expedition (Washington, 1845) Illustrations of the Birds of California, Texas, Oregon, British and Russian America (1853-56). Birds of Chile (1855) Ornithology of Gillies's Astronomical Expedition to Chili (1855) Ornithology of the Japan Expedition (1856) Descriptions of all North American Birds not given by Former American Authorities (Philadelphia, 1858) Explorations and Survey for a Railroad Route from the Mississippi to the Pacific Ocean (1858) Birds of North America (1860), realizzato insieme a Baird e Lawrence.
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