House Divided - The Ultimate U.S. Civil War Resource

Dickinson College's House Divided website endeavors to be the most complete digital archive of the U.S. Civil War. They've got it all. Entering the site will automatically give you data for the events of exactly 150 years ago - events, documents, letters, even birthdays of prominent (and not-so-prominent) people, most with informative biographies and great images. The 150th anniversary of the war is coming up, so needless to say this tool will be invaluable in U.S. History classrooms.

All of the  data is fully searchable, of course. They have a blog (RSS feed) that currently has a cool post about teaching Abraham Lincoln. Also on the site they feature several teacher resources, including:

• a digital classroom for teaching about the underground railroad 
• several virtual field trips, some of which are under construction
  
• a video library featuring interviews with historians on emancipation, the Dred Scott case, the underground railroad, and more
• a digital library of a handful of first-hand slave narratives