51 Great Online Resources for History Teachers has had several recent additions. The biggest change is that we have added several encyclopedias and history portals for over 25 states. These additions focus on state history and archives. Many of these resources could be extremely useful if students have state history projects.
The article still has a ton of stuff including an outstanding online free United States History textbook, government resources, history blogs, and numerous organizations focused on helping teachers find primary source materials for their classrooms.
If you have any additional suggestions for the list please leave them in the comments below.
51 Great Online Resources for History Teachers at DailyHistory.org.