The American Civil War Homepage
http://sunsite.utk.edu/civil-war/warweb.html

The Valley of the Shadow
http://valley.vcdh.virginia.edu/

Index of Civil War Information Available on the Internet
http://www.cwc.lsu.edu/cwc/civlink.htm

Dakota State University: The American Civil War Index Page
http://www.homepages.dsu.edu/jankej/civilwar/civilwar.htm

Civil War Records, Maine State Archives
http://www.state.me.us/sos/arc/archives/military/civilwar/civilwar.htm

Curtis Library - Maine Civil War Links
http://www.curtislibrary.com/chamberlaincwrt/links.html

The Civil War Home Page
http://www.civil-war.net/

Civil War Resources - John's Barrel of Links
http://www.genealogytoday.com/barrel/links2.html

US Civil War Information (Thanks to Shirley Baker!) :)
http://www.usa-people-search.com/content-us-civil-war-information.aspx