Illustrations of British ornithology - Selby, Prideaux John, 1788 -1867 (Printed for the proprietor, and published by W.H. Lizars ; London : Longman, Rees, Orme, Brown, Green and Longman ; Dublin : W. Curry Jun. & Co, 1833)

Illustrations of Indian ornithology : containing fifty figures of new, unfigured and interesting species of birds, chiefly from the south of India - Jerdon, T. C. (Thomas Claverhill), 1811 -1872 (Printed by P.R. Hunt, American Mission Press, 1847)

Illustrations of ornithology - Lear, Edward, 1812 -1888 (Published by W.H. Lizars, 1826)

Illustrations of the botany and other branches of the natural history of the Himalayan Mountains :and of the flora of Cashmere - Royle, J. Forbes (John Forbes), 1798 -1858 (Wm. H. Allen, 1839)

Illustrations of zoology. The engravings by F.W. Lowry and Thomas Landseer (John Joseph Griffin and Co, 1851)

Illustriertes Jahrbuch der Naturkunde (Karl Prochaska, 1909)

Illustrirte naturgeschichte des thierreichs - Poeppig, Eduard, 1798 -1868 (J.J. Weber, 1851)

Illustrirtes Thierleben - Brehm, Alfred Edmund, 1829 -1884 (Verlag des Bibliogr. Instituts, 1867)

In Malay forests - Maxwell, William George, Sir, 1871 - (Blackwood, 1911)

In Malay forests - Maxwell, William George, Sir, 1871 - (Blackwood, 1907)

In the green leaf and the sere - Jordan, Denham (K. Paul, Trübner & Co., Ltd, 1896)

Incidents of travel in Yucatan - Stephens, John L., 1805 -1852 (Harper & Brothers, 1843)

Incidents of travel in Yucatan - Catherwood, Frederick, 1799 -1854 (Harper & Brothers, 1843)

Incrementa florae phaenogamae Rossicae - Trautvetter, Ernst Rudolph von, 1809 -1889 ([s.l.], 1882)

Index animalium; sive, Index nominum quae ab A. D. MDCCLVIII generibus et speeiebus animalium imposita sunt - Sherborn, Charles Davies, 1861 -1942 (e typographio academico, 1892)

Index animalium; sive, Index nominum quae ab A. D. MDCCLVIII generibus et speeiebus animalium imposita sunt - Sherborn, Charles Davies, 1861 -1942 (e typographio academico, 1758)