Map shows the "Affair at Monett's Bluff, April 23, 1864". It is from a US government publication commonly known as the "Official Records" in Civil War literature. (The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies' Series I, Volume XXXIV, Part I, page 233)
The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies' Series I, Volume XXXIV, Part I (1891) U.S. Government Printing Office, Washington D.C.
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