48th OVI Rosters- (includes those from Defiance County)

http://www.48ovvi.org/oh48rosters.html

American Civil War - National Park Service

http://www.nps.gov/civilwar/index.htm

Ohio Infantry

http://www.ohiocivilwar.com/infantry.html

Civil War Rosters for Ohio

http://www.civilwararchive.com/unionoh.htm

Ohio in the Civil War - has regiment histories.

http://www.ohiocivilwar.com/index.html

Civil War Documents | Ohio Historical Society

http//www.ohiohistory.org/

Civil War Documents at the Library of Congress - read documents and books online.

http://www.loc.gov//