The condor - Cooper Ornithological Club. (Cooper Ornithological Club, 1899)

The condor - Cooper Ornithological Club. (Cooper Ornithological Club, 1901)

The condor - Cooper Ornithological Club. (Cooper Ornithological Club, 1904)

The condor - Cooper Ornithological Club. (Cooper Ornithological Club, 1905)

The condor - Cooper Ornithological Club. (Cooper Ornithological Club, 1907)

The condor - Cooper Ornithological Club. (Cooper Ornithological Club, 1909)

The condor - Cooper Ornithological Club. (Cooper Ornithological Club, 1911)

The condor - Cooper Ornithological Club. (Cooper Ornithological Club, 1913)

The condor - Cooper Ornithological Club. (Cooper Ornithological Club, 1915)

The condor - Cooper Ornithological Club. (Cooper Ornithological Club, 1917)

The condor - Cooper Ornithological Club. (Cooper Ornithological Club, 1919)

The condor - Cooper Ornithological Club. (Cooper Ornithological Club, 1921)

Contributions to the history of North American ornithology - Jackson, Jerome A (Nuttall Ornithological Club, 1995)

Contributions to the natural history of Alaska. Results of investigations ... in the Yukon district and the Aleutian islands; conducted under the auspices of the Signal service, United States Army, extending from May, 1874, to August, 1881 ... - Turner, Lucien M. (Lucien McShan) (Govt. Print. Off, 1886)

Contributions to the natural history of Alaska results of investigations made chiefly in the Yukon district and the Aleutian Islands; conducted under the auspices of the Signal Service, United States Army, extending from May, 1874, to August, 1881 - Turner, Lucien M. (Lucien McShan) (G.P.O, 1886)

Contributions to the natural history of the Bermudas. Vol. I - Goode, G. Brown (George Brown), 1851 -1896 (Govt. print. off, 1884)

The Coues check list of North American birds - Coues, Elliott, 1842 -1899 (Estes and Lauriat, 1882)

Crossosoma - Southern California Botanists. (Southern California Botanists, Rancho Santa Ana Botanic Garden, 1997)

Cruise of the revenue steamer Corwin in Alaska and the N. W. Arctic ocean in 1881 ... Notes and memoranda ... - Bean, Tarleton H. (Tarleton Hoffman), 1846 -1916 (Govt. Print. Off, 1883)

Cruise to Northwest Greenland, 1938, "Report on the Scientific Collecting done in Newfoundland, Labrador, Greenland, and the Canadian Arctic, with Field Notes," by David C. Nutt - Schmitt, Waldo L. (Waldo Lasalle), 1887 -1977 (1938)

Darwinism to-day - Kellogg, Vernon L. (Vernon Lyman), 1867 -1937 (H. Holt and company, 1907)

Darwinism to-day; a discussion of present-day scientific criticism of the Darwinian selection theories, together with a brief account of the principal other proposed auxiliary and alternative theories of species-forming - Kellogg, Vernon L. (Vernon Lyman), 1867 -1937 (H. Holt and company, 1907)

Darwinism to-day a discussion of present-day scientific criticism of the Darwinian selection theories : together with a brief account of the principal other proposed auxillary and alternative theories of species-forming - Kellogg, Vernon L. (Vernon Lyman), 1867 -1937 (G. Bell, 1907)

The Death valley expedition. A biological survey of parts of California, Nevada, Arizona, and Utah. Part II - Stejneger, Leonhard, 1851 -1943 (Govt. print. off, 1893)

Descriptions of the first plumage in various species of North American birds - Brewster, William, 1851 -1919 (1878)

Diaries of William Brewster, 1865-1919 (inclusive) - Brewster, William, 1851 -1919 (1869)

Diaries of William Brewster, 1865-1919 (inclusive) - Brewster, William, 1851 -1919 (1878)

Diaries of William Brewster, 1865-1919 (inclusive) - Brewster, William, 1851 -1919 (1908)

Diaries of William Brewster, 1865-1919 (inclusive) - Brewster, William, 1851 -1919 (1910)

Diaries of William Brewster, 1865-1919 (inclusive) - Brewster, William, 1851 -1919 (1911)

Diary, 1910, of trip with George and Samuel Mixter to Alaska, Alberta, British Columbia, Montana, North Dakota and Washington - Preble, Edward Alexander, 1871 -1957 (1910)

Diary, 1913, of trip with Charles Robert Cross to British Columbia - Preble, Edward Alexander, 1871 -1957 (1913)

A directory of the ornithologists of the United States : comprising a list of the collectors and students of ornithology, with the valuations of their collections, number of species represented, &c., &c., supplemented by statistics of value and information concerning public and private collections, average value of public and private collections, topics of interest to amateurs, &c.,&c - Willard, S. L. (The Oologist, 1877)

Directory to the birds of Eastern North America - Maynard, C. J. (Charles Johnson), 1845 -1929 (1907)

Directory to the birds of eastern North America, illustrated with many wood cuts and ... plates drawn and engraved by the author - Maynard, C. J. (Charles Johnson), 1845 -1929 (1907)

A distributional list of the birds of Arizona - Swarth, Harry S. (Harry Schelwald), 1878 -1935 (Cooper Ornithological Club, 1914)

A distributional list of the birds of Arizona - Cooper Ornithological Society. (Cooper Ornithological Club, 1914)

A distributional list of the birds of Montana, with notes on the migration and nesting of the better known species - Saunders, Aretas A. (Aretas Andrews), 1884 -1970 (The Club, 1921)

The Dominion of Canada (s.n, 1900)

Donald R. Dickey Field Notes, 1916 - Dickey, Donald R. (Donald Ryder), 1887 -1932 (San Diego Natural History Museum Research Library, 1916)

An ecological survey in northern Michigan - Adams, Charles C. (Charles Christopher), 1873 -1955 (Wynkoop Hallenbeck Crawford co., state printers, 1906)

Economic relations of Wisconsin birds - King, F. H. (Franklin Hiram), 1848 -1911 (1883)

The economic value of birds to the state ... - Chapman, Frank M. (Frank Michler), 1864 -1945 (1903)

The economic value of birds to the state - Fuertes, Louis Agassiz, 1874 -1927 (J. B. Lyon Company, Printers, 1903)

The Edinburgh new philosophical journal (A. and C. Black [etc.], 1861)

Education through nature study; foundations & methods - Munson, John P. (Kellogg, 1903)

Eggs of North American birds - Maynard, C. J. (Charles Johnson), 1845 -1929 (De Wolfe, Fiske & co, 1890)

The Emu : official organ of the Australasian Ornithologists' Union - Australasian Ornithologists' Union. (Royal Australasian Ornithologists Union, 1901)

Entomologica Americana - Brooklyn Entomological Society (New York Entomological Society [etc.], 1945)

Entomologica Americana - Brooklyn Entomological Society (New York Entomological Society [etc.], 1953)

Entomologica Americana - Brooklyn Entomological Society (New York Entomological Society [etc.], 1954)

Entomologica Americana - Brooklyn Entomological Society (New York Entomological Society [etc.], 1956)

"Every bird;" a guide to the identification of the birds of woodland, beach and ocean. With one hundred and twenty-four line illustrations - Howe, Reginald Heber, Jr. 1875 -1932 (B. Whidden, 1896)

Evolution and adaptation - Morgan, Thomas Hunt, 1866 -1945 (The Macmillan Company, 1903)

Evolution of the colors of North American land birds - Keeler, Charles, 1871 -1937 (Academy of Sciences, 1893)

Evolution of the colors of North American land birds - Keeler, Charles, 1871 -1937 (California Academy of Sciences, 1893)

Evolution of the colors of North American Land Birds - Keeler, Charles, 1871 -1937 (California academy of sciences, 1893)