Butterflies of Britain & Europe - Tolman, Tom (HarperCollins, 1997)

Butterflies of Hongkong - Kershaw, John Crampton Wilkinson, 1871 -1951 (Kelly & Walsh, 1907)

The butterflies of Montana : with keys for determination of species - Elrod, Morton J. (Morton John), 1863 -1953 (University of Montana, 1906)

The butterflies of North America - Edwards, William H. (William Henry), 1822 -1909 (American Entomological Society, 1868)

The butterflies of North America - Edwards, William H. (William Henry), 1822 -1909 (Houghton, Osgood and Company, 1879)

The butterflies of the Bahama Islands, British West Indies (Lepidoptera) - Gertsch, Willis John, 1906 - (American Museum of Natural History, 1952)

The butterflies of the eastern United States and Canada : with special reference to New England - Riley, Charles V. (Charles Valentine), 1843 -1895 (The author, 1889)

Butterflies of the Green Mountain National Forest - United States. State; Private Forestry. Northeastern Area. (U.S. Dept. of Agriculture, Forest Service, 1996)

Butterflies of the Riviera. A short account of the Rhopalocera of the Maritime Alps - Bromilow, Frank (Printed by P. Conso, 1892)

The butterflies of the Van Voast-American Museum of Natural History Expedition to the Bahama Islands, British West Indies - Rindge, Frederick H. 1921 -1996 (American Museum of Natural History, 1955)

The butterflies of the west coast of the United States; illustrated with 940 figures in color-photography of butterflies from the west coast, nearly all of which were captured by the author, with accurate data for each specimen; with colored figures and descriptions of many new species and new varieties now first published - Wright, W. G. (William Greenwood), 1830 -1912 (The Whitaker & Ray Company (Incorporated), 1905)

The butterflies of the West Coast of the United States : with colored figures and descriptions of many new species and new varieties now first published - Wright, W. G. (William Greenwood), 1830 -1912 (Wright, 1905)

Butterflies. Vol. I-II - Bingham, C. T. (Charles Thomas), 1848 -1908 (Taylor and Francis, 1907)

Butterflies worth knowing - Weed, Clarence Moores, 1864 -1947 (Pub. by Doubleday, Page & Company for Nelson Doubleday, 1923)

Butterflies worth knowing, by Clarence M. Weed... - Weed, Clarence Moores, 1864 -1947 (Doubleday, Page & company, 1917)

Butterfly counts - Opler, Paul A. (The Society, 1982)

Butterfly counts - Opler, Paul A. (The Society, 1984)

California fish and game - California. Division of Fish; Game. (State of California, Resources Agency, Dept. of Fish and Game, 1949)

Call production by myrmecophilous riodinid and lycaenid butterfly caterpillars (Lepidoptera) : morphological, acoustical, functional, and evolutionary patterns - DeVries, Philip J., 1952 - (American Museum of Natural History, 1991)

The Cambridge natural history - Harmer, S. F. (Sidney Frederic), 1862 -1950 (Macmillan and co., limited, 1899)

The Cambridge natural history - Harmer, S. F. (Sidney Frederic), 1862 -1950 (Macmillan and co., limited, 1901)

Canada's missing dimension : science and history in the Canadian Arctic Islands - Harington, C. R. (Charles Richard), 1933 - (Canadian Museum of Nature, 1990)

Canadian butterflies worth knowing - Weed, Clarence Moores, 1864 -1947 (Musson, 1917)

The Canadian entomologist - Entomological Society of Canada (1863-1871) (Entomological Society of Canada [etc.], 1875)

The Canadian entomologist - Entomological Society of Canada (1863-1871) (Entomological Society of Canada [etc.], 1876)

The Canadian entomologist - Entomological Society of Canada (1863-1871) (Entomological Society of Canada [etc.], 1884)

The Canadian entomologist - Entomological Society of Canada (1863-1871) (Entomological Society of Canada [etc.], 1896)

The Canadian entomologist - Entomological Society of Canada (1863-1871) (Entomological Society of Canada [etc.], 1903)

The Canadian entomologist - Entomological Society of Canada (1863-1871) (Entomological Society of Canada [etc.], 1920)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1920)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1980)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1986)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1987)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1988)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1994)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1995)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 2004)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 2011)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 2012)

Beitrag zur Microlepidopterenfauna des canarischen Archipels - Rebel, H. (Hans), 1861 - (1892)

Capital natural de México - Sarukhan, Jose (Comisión Nacional para el Conocimiento y Uso de la Biodiversidad (CONABIO), 2008)

Capital natural de México - Sarukhan, Jose (Comisión Nacional para el Conocimiento y Uso de la Biodiversidad (CONABIO), 2009)

Carnegie Institution of Washington publication - Carnegie Institution of Washington (Carnegie Institution of Washington, 1906)

Carnivorous plant newsletter - California State University, Fullerton. Arboretum. (International Carnivorous Plant Society, etc, 2016)

Cascade-Siskiyou National Monument : draft resource management plan/environmental impact statement - United States. Bureau of Land Management. Medford District. (U.S. Department of the Interior, Bureau of Land Management, Medford District Office, 2002)

Casopis Ceské spolecnosti entomologické = Acta Societatis Entomologicae Bohemiae - Ceská spolecnost entomologická (Spolecnost, 1917)

Cassell's natural history - Duncan, F. Martin (Francis Martin), 1873 -1961 (Cassell and Co, 1913)