Geo Clio: Webserver for the History of Geology and the Geosciences. - Information on research in the history of Geology and Earth Sciences: links, news of upcoming meetings, recent publications, etc.GSA History of Geology Division - Web site includes organization information, as well as several papers on important geologists and their work.
HESS: History of the Earth Sciences Society - International society devoted to the history of earth sciences. Site has information about the organization and its journal, Earth Sciences History.
Out of Print Geology Books for sale - Also including books on paleontology, mineralogy, mining, explorations, early surveys, volcanology, seismology and meteoritics.
Cofrhigeorama - History of Geology geology, mineralogy, petrology and other Earth sciences. In French and English.
The Great Devonian Controversy - A review of the book by Martin Rudwick about this 19th century geological controversy.
Bartleby.com: Sir Charles Lyell - Includes etexts of scientific papers, "The Progress of Geology" and "Uniformity of Change".
An Introductory Guide to Continental Drift - Brief overview of the development of drift theory. Bibliography. Links to relevant sites
Athanasius Kircher Links, with a Geoscience Bias - An annotated and categorized link directory.