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General Civil War Links:
Civil War.com (organized by topic): http://www.civilwar.com/
American Civil War Page (awesome collection of links): http://sunsite.utk.edu/civil-war/warweb.html
Civil War.net (lots of good links about battles, includes photo gallery): http://www.civil-war.net/
People in the Civil War: http://www.shmoop.com/civil-war/people.html

African-Americans in the Civil War:
Library of Congress site (primary source documents): http://memory.loc.gov/ammem/aaohtml/exhibit/aopart4.html

Women of the Civil War:
American Civil War Women Links: http://americancivilwar.com/women/women.html
Civil War Women: Primary Source Documents: http://library.duke.edu/specialcollections/bingham/guides/cwdocs.html
General Women in the Civil War site: http://userpages.aug.com/captbarb/femvets2.html
Elizabeth Blackwell: http://womenshistory.about.com/od/blackwellelizabeth/a/eliz_blackwell.htm

Civil War Prison Camps:
National Geographic article: http://news.nationalgeographic.com/news/2003/07/0701_030701_civilwarprisons.html
American Heritage Magazine article: http://www.americanheritage.com/articles/magazine/ah/1959/5/1959_5_4.shtml
Andersonville Prison (National Park Service site): http://www.nps.gov/seac/histback.htm

Civil War Soldiers, Battles, and Weapons:
Civil War Soldiers (National Park Service site): http://www.nps.gov/archive/gett/soldierlife/soldiers.htm
Civil War weapons, spies, medicine, and technology: http://www.teacheroz.com/Civil_War_Weapons.htm
Civil War battles by state: http://www.nps.gov/hps/abpp/battles/bystate.htm
Civil War battles - alphabetical List: http://americancivilwar.com/statepic/alpha.html

Arts and Photos:
PBS Civil War Page: http://www.pbs.org/civilwar/war/
Library of Congress Civil War Photos: http://www.loc.gov/rr/print/list/picamer/paCw1861.html
Civil War Poetry: http://www.civilwarpoetry.org/