Now is a great time to be conducting historical research. More and more primary sources, once accessed only in individual archives, are now being digitized and made available on the web in digital archives.
This page contains links to several digitization projects. You can search the web to find others. If you find a great website, please share it by submitting the link in the box below.
The following is just a sampling of the many digitized historical collections cropping up all over the web. You can find many others by searching in Google.
Books published before 1923 are in the Public Domain, so the full-text of many historical books may be found via Google Book Search.