HPS Subject Guide at the Pitt Library (contains many other links) Horus' Web Links to History Resources HUMBUL's free "teach yourself" tutorial on Internet information skills for historians and philosophers of science. The Stanford On-Line Encyclopedia of Philosophy
Cognitive Sciences E-Print Archive Philosophers Imprint PhilSci Pre-print Archive http://arxiv.org/
Catalog of the Scientific Community: 16th and 17th Centuries History of Recent Science and Technology at the Dibner Institute The Galilean Digital Library at the Instituto e Museo di Storia della Scienza Museum of the History of Science, Oxford