*[http://www.civilwar.nps.gov/cwss/ Civil War Soldiers & Sailors System] has the information listed above and may have additional historical information. Searches can be made by name of a soldier or sailor. Information about cemeteries battles, prisoners, medals of honor and national parks is also included.
*[http://www.ohiocivilwar.com/infantry.html Ohio in the Civil War] by Larry Stevens, includes brief histories of the regiments, bibliographies of regiments, and often lists of companies with their counties.
*[http://www.ogs.org/cwc/index.php Ohio Civil War Genealogy Center], by The Ohio Genealogical Society, has a search for names of Union Soldiers in Ohio Units, a search for the surname in the ''Ohio Civil War Genealogy Journal'', and a search of the index of the Society of Civil War Families of Ohio Roster. The roster uses the same data as the Civil War Soldiers & Sailors System, but has a much more flexible search engine.
*[http://www.ohiohistorycentral.org/entry.php?rec=463 The Civil War] is an online encyclopedia of Ohio history.