The genera and species of Mallophaga - Harrison, Launcelot. (Cambridge University Press, 1916)

Genera et species Staphylinorum : insectorum coleoptorum familiae - Erichson, W. F. (Wilhelm Ferdinand), 1809 -1848 (F.H. Morin, 1840)

Genera of birds - Pennant, Thomas, 1726 -1798 (Printed for B. White, 1781)

The genera of birds : comprising their generic characters, a notice of the habits of each genus, and an extensive list of species referred to their several genera - Gray, George Robert, 1808 -1872 (Longman, Brown, Green, and Longmans, 1849)

The genera of birds : comprising their generic characters, a notice of the habits of each genus, and an extensive list of species referred to their several genera - Gray, George Robert, 1808 -1872 (Longman, Brown, Green, and Longmans, 1844)

The genera of North American birds, and a synopsis of the species found within the territory of the United States - Bonaparte, Charles-Lucien, 1803 -1857 (Printed by J. Seymour, 1828)

General biology - Mavor, James Watt, 1883 -1963 (Macmillan Co, 1947)

A general history of birds - Latham, John, 1740 -1837 (Printed by Jacob and Johnson, for the author : sold in London by G. and W.B. Whittaker ... [and 3 others], 1821)

A general history of birds - Latham, John, 1740 -1837 (Printed by Jacob and Johnson, for the author : sold in London by G. and W.B. Whittaker ... [and 3 others], 1822)

General index to A hand-list of the genera and species of birds - Sharpe, Richard Bowdler, 1847 -1909 (British Museum (Natural History), 1912)

A general price list for the trade exclusively : 1924-1925 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (San Pedro Ranch Nursery, 1924)

A general synopsis of birds - Latham, John, 1740 -1837 (Printed for Benj. White, 1782)