Guide to the birds of the Caucasus - Satunin, Konstantin Alekseevich (1907)

Guide to the gallery of birds in the Department of zoology, British museum (Natural history) - British Museum (Natural History). Department of Zoology. (Printed by order of the Trustees, 1910)

Guide to the gallery of birds in the Department of Zoology of the British Museum (Natural History) - British Museum (Natural History). Department of Zoology. (Printed by order of the Trustees, 1905)

The Gull - Audubon Association of the Pacific. (Golden Gate Audubon Society, 1926)

The Gull - Audubon Association of the Pacific. (Golden Gate Audubon Society, 1992)

The Gull - Audubon Association of the Pacific. (Golden Gate Audubon Society, 2001)

Hamlyn's menagerie magazine (1917)

Hand-book to the birds of Great Britain - Sharpe, Richard Bowdler, 1847 -1909 (Allen, 1896)

Hand-book to the birds of Great Britain - Sharpe, Richard Bowdler, 1847 -1909 (Allen, 1895)

A hand-book to the birds of Great Britain - Sharpe, Richard Bowdler, 1847 -1909 (E. Lloyd, Limited, 1896)

A hand-book to the game-birds - Ogilvie-Grant, W. R. (William Robert), 1863 -1924 (W.H. Allen & Co, 1895)

A hand-book to the game-birds - Ogilvie-Grant, W. R. (William Robert), 1863 -1924 (E. Lloyd, 1896)

A hand-list of British birds, with an account of the distribution of each species in the British Isles and abroad - Jourdain, F. C. R. (Francis Charles Robert), 1865 -1940 (Witherby, 1912)

Hand-list of genera and species of birds : distinguishing those contained in the British Museum - Gray, George Robert, 1808 -1872 (printed by order of the Trustees, 1871)

Hand-list of genera and species of birds : distinguishing those contained in the British Museum - Gray, George Robert, 1808 -1872 (printed by order of the Trustees, 1869)

A hand-list of genera and species of birds of the Indian empire - Bombay Natural History Society. (Printed by order of the committee of the Bombay Natural History Society, 1923)