Statistics for occurrence #1 of “Surg. J. M. Keller” in chapter 13, page 378 of Col. John M. Harrell, Confederate Military History, a library of Confederate States Military History: Volume 10.2, Arkansas:

... I am totally ignorant of it. I have the honor to be, etc., P. O. Hooper, President. List of surgeons and assistant surgeons examined and appointed for the year ending December 31, 1862: Surg. J. M. Keller , appointed medical director, June 16, 1862, was transferred east at the close of that year at his request, and Surg. J. M. Haden held the position at Shreveport, La., until May 1, 1864, when he was s...
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