1881
List of Species of Middle and South American Birds not contained in the United States National Museum. Corrected to July 1881.
(Proc. U. S. Nat. Mus., Vol. IV, pp. 165-203). Washington, 1881.
1886
Description of a new species of oystercatcher from the Galapagos Islands.
(Auk, III, p. 331) Lancaster, Pa., 1886
1887
Description of a recently new oyster-catcher (Haematopus galapagensis) from the Galapagos Islands.
(Proc. U. S. Nat. Mus. 1886, pp. 325-326). Washington, 1887.
1889
Scientific Results of Explorations by the U. S. Fish Comm. Steamer “Albatros”. I. Birds collected on the Galapagos Islands in 1888. New York, 1889.
1890
Birds collected on the Galapagos Islands.
(Proc. U. S. Nat. Mus., Vol. XII, february 5, pp. 101-128). Washington, 1890.
1894
(Birds of Ecuador).
Description of twenty-two new species of birds from the Galapagos Islands.
(Proc. U. S. Nat. .Mus. Vol. XVII, Nº 1007, Nov. 15, pp. 357-370). Washington, 1894.
1895
Preliminary description of some new birds from the Galapagos Archipelago.
(Proc. U. S. Nat. Mus. Vol. XVIII, pp. 293-294). Washington, 1895.
1897 – 1898
Birds of the Galapagos Archipelago.
(Proc. U. S. Nat. Mus. Vol. XIX, pp. 459-670. 8º, 212 pp., 2 tab.). Washington, 1897. London, 1898.
1898
Birds of the Galapagos Archipelago.
(“Correspondence”: Replying to criticisms of Dr. Baur). (Am. Nat. XXXII, pp. 386-389). Boston, 1898.
1901 – 1919.
The Birds of North and Middle America, a descriptive catalogue …. Galapagos Archipelago.
(Smithsonian Institution Bull. 50, 8 vol. 8º). Washington, 1901 – 1919.
1914
Sporophila incerta.
(Proc. Biological Society, October 1914, p. 213). Washington, 1914.