[en] [Gutenberg 48132] • Essays Upon Heredity and Kindred Biological Problems / Authorised Translation Createspace Independent Publishing Platform
[it] [Gutenberg 40299] • Memorie di un vecchio carbonaro ravegnano Createspace Independent Publishing Platform
[en] [Gutenberg 24800] • Darwin, and After Darwin, Volumes 1 and 3 / An Exposition of the Darwinian Theory and a Discussion of Post-Darwinian Questions Createspace Independent Publishing Platform
[en] [Gutenberg 16729] • Lay Sermons, Addresses and Reviews Kessinger Publishing
[en] [Gutenberg 2631] • Mr. Gladstone and Genesis / Essay #5 from "Science and Hebrew Tradition" Kessinger Publishing
[en] [Gutenberg 52273] • Evolution Createspace Independent Publishing Platform
[en] [Gutenberg 12359] • The Meaning of Infancy Createspace Independent Publishing Platform
[en] [Gutenberg 16559] • The Life Story of an Old Rebel Createspace Independent Publishing Platform
[en] [Gutenberg 36520] • The Descent of Man and Selection in Relation to Sex, Vol. II (1st Edition) Createspace Independent Publishing Platform
[en] [Gutenberg 26163] • Creative Evolution Createspace Independent Publishing Platform
[en] [Gutenberg 51184] • Inside Earth Positronic Publishing
[en] Beyond Extinction On Edge Publishing, Cambridge, England
[es] Al apoyo mutuo Createspace Independent Publishing Platform
[en] Understanding the 5 Human Types Big Nest
[en] [Gutenberg 51525] • The Influence of Darwin on Philosophy, and other essays in contemporary thought Southern Illinois University Press
[en] [Gutenberg 52801] • The Factors of Organic Evolution Forgotten Books