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

The Butterflies of Ceylon - Ormiston, W. (Cave, 1924)

The butterflies of Great Britain with their transformations delineated and described - Westwood, J. O. (John Obadiah), 1805 -1893 (G. Routledge, 1887)

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 (Houghton, Osgood and Company, 1879)

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

The butterflies of North America. Second series - Edwards, William H. (William Henry), 1822 -1909 (Houghton, Mifflin, 1884)

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

The butterflies of the British Isles - South, Richard, 1846 -1932 (F. Warne, 1906)

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)