Revisionist? The earliest date for his references is 1926.
The most able study "Why Jefferson Davis Was Never Tried, Southern Historical Society Papers, vol 38, pp 347-49
George Shea, (Davis' lawyer), Southern Historical Society Papers, vol 37, pp 344-53
The most able study "The U.S. vs. Jefferson Davis," by Ray F. Nichols, American Historical Review, Vol. 3, no. 2, Jan. 1926, pp 266, ff.
"The Trials and Trail of Jefferson Davis," a paper, Virginia Bar Association, 1900.
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David Upton