Statistics for occurrence #1 of “Ohio river” in chapter 1.58 of Southern Historical Society Papers, Volume 35.:

...ome fifteen or twenty names short: Captain—Thomas Bronston Collins, wounded at Greasy Creek, Ky., May 9, 1863, escaped with Colonel A. R. Johnson at Buffington Island, Ohio, by swimming the Ohio river , afterwards went to Canada in the secret service of the Confederacy, and was one of the twenty Confederate soldiers who made the celebrated Bank Raid at St. Albans, Vt. First Lieutenant, J. F. Ol...
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