claimed that William McKinley's ghost had visited him in a dream and told him to avenge his assassination by killing Roosevelt. Schrank was committed to the Central State Hospital for the Criminally Insane in Waupun, Wisconsin, in 1914. He remained there for 29 more years, until he died on September 15, 1943, of bronchial pneumonia. His body was donated to the medical school at Marquette University (now the Medical College of Wisconsin) for anatomical dissection. Archive While John F. Schrank was committed, he wrote a number of letters to the doctor he was consulting at the mental hospital, Adin Sherman. The University of North Carolina at Wilmington possesses twenty of them. The letters are dated between 1914 and 1918. The accession number in the Manuscripts Collection is 148. The Milwaukee Public Library contains a collection of court exhibits and transcripts from Schrank's trial. It is Local History Manuscript Collection 43. References Further reading Foley, William J. "A bullet and a Bull Moose." JAMA Journal of the American Medical Association 209.13 (1969): 2035–38. Helferich, Gerard. Theodore Roosevelt and the Assassin: Madness, Vengeance, and the Campaign of 1912 (2013) excerpt External links Theodore Roosevelt (attempted assassination), Wisconsin Dictionary of History, Wisconsin Historical Society Images at Library of Congress Crime in Milwaukee Roosevelt, Theodore Theodore Roosevelt Attempted assassinations of presidents of the United States Political history of Wisconsin