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, and recent publications.

GSA History of Geology Division
Web site includes organization information, as well as several papers on important geologists and their work.

Out of Print Geology Books for sale
Also including books on paleontology, mineralogy, mining, explorations, early surveys, volcanology, seismology and meteoritics.

Cofrhigeorama
Provides historical information on 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

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.

No Stone Unturned
The First 150 years of the Geological Survey of Canada.

Lord Kelvin and the Age of the Earth
Mathematical details of Lord Kelvin's young earth calculation, from a course in applied fourier analysis.