Electronic Resources for Physics
General and World History
Exploring Ancient World Cultures on the Web.
A Chronology of Russian History, chosen by both Discovery and Encarta!
Archaic and Classical Greek history
Library of Hindu History, from Ancient to Modern times.
United States History
Archiving Early America has original newspapers, maps & writings from 18th century
American Studies Electronic Crossroads is located at Georgetown University.
In the Netherlands, The University of Groningen is developing a collection of documents in American history which you might like to sample. They even have an American history text on line.
The Independence Hall Association has much information about the American Revolutionary era.