Statistics for occurrence #1 of “Ohio” in chapter 1.8, page 204 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 7: Prisons and Hospitals.:

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for the enemy will not be allowed. Two subordinate officers attended a political meeting at Mount Vernon, Ohio , May 1, 1863, at which Vallandigham spoke, for the purpose of securing evidence. Upon reading their notes, General Burnside ordered the arrest of Vallandigham, which was accomplished at half-past 2...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Ohio (Ohio, United States) 4,328 22 10 0 0 user votes
Ohio (United States) 1,611 4 1 0 0 user votes
Ohio (Colorado, United States) 12 0 0 0 0 user votes
Ohio (Illinois, United States) 0 0 0 0 0 user votes
Ohio (Missouri, United States) 0 0 0 0 0 user votes
Ohio (New York, United States) 0 0 0 0 0 user votes
Ohio (Texas, United States) 0 0 0 0 0 user votes

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.