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Aechmophorus clarkii (Lawrence, 1858)
- Baird, S.F. 1858. Reports of explorations and surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean. Vol. 9: i–lvi, 1–1005. Washington. DOI: 10.5962/bhl.title.11139 BHL. Part II, with the cooperation of Cassin, J. & Lawrence, G.N. Birds. BHL Reference page.
- Coues, E. 1862. Synopsis of the North American Forms of the Colymbidae and Podicipidae. Proceedings of the Academy of Natural Sciences of Philadelphia 14: 226–233. BHL Reference page.