Just some sites I came across today:
MIT OpenCourseWare, free online course materials covering a wide range of topics. Of interest here are History of Science, Toward the Scientific Revolution, The Rise of Modern Science, History and Anthropology of Medicine and Biology, Social Study of Science and Technology, Nature, Environment, and Empire, People and Other Animals, and Darwin and Design (literature).
The Darwin-L Archives, a discussion group for academic professionals in the historical sciences that was active from 1993–1997. The site notes that “[i]n spite of its name, Darwin-L did not focus specifically on the work of Charles Darwin, but rather covered the entire range of palaetiology from an explicitly comparative perspective, including evolutionary biology, historical linguistics, textual transmission and stemmatics, historical geology, systematics and phylogeny, archeology, paleontology, historical geography, cosmology, and historical anthropology.”
Museum Studies e-Journal from the University of Oklahoma, first issue has an article about the role of podcasting in museums. Also at UO, their history of science collections, online being some digitized books, scientist portraits, and image gallery.
The Dispersal of Darwin
The Dispersal of Darwin 