Statistics for occurrence #1 of “Fort Pemberton” in chapter 5.73 of Robert Underwood Johnson, Clarence Clough Buell, Battles and Leaders of the Civil War. Volume 3.:

...tate authorities. S. B. Morgan, of Greenwood, Mississippi, wrote to the editors, January 12th, 1888, that the Star of the West was sunk in the Tallahatchie on March 13th, 1863, under the parapet of Fort Pemberton , to prevent Union gun-boats, that had entered by way of Yazoo Pass, from passing from the Tallahatchie into the Yazoo River. [See map, p. 442.]
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