Arch Fredric Blakey, "Wirz, Henry", American National Biography Online, February 2000, http://www.anb.org/articles/04/04-01167.html.
The assassination of Abraham Lincoln further inflamed the North, already sickened and enraged over the prisoner issue, and the public demanded that someone pay for these crimes. Winder died of a heart attack on 6 February 1865, thus depriving vengeful Union authorities of any opportunity of trying him as a war criminal. That left Wirz, who was arrested in May 1865, still tending to the sick at Andersonville. The Wirz "trial" lasted for three months; he was charged with murder and abuse of prisoners and of conspiring with Jefferson Davis, James Seddon, and others to murder the prisoners en masse. Lies and distortions were accepted as fact, and Wirz was sentenced to hang "for impairing the health and destroying the lives of prisoners."