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Index to Official Roster of Ohio Soldiers in the War with Spain, 1898-1899. Mansfield OH: Ohio Genealogical Society, 1992. Reprinted 1999.
Broglin, Jana Sloan. 
James Denison’s Letters During His Spanish American War Service
James Avery Denison, 1899
Naval Reserves of Ohio in the War with Spain, 1898-99
James Jay Erwin, 1899
Official History of the Ohio National Guard and Ohio Volunteers
E. Warren Pratt, 1911