District of Columbia City Hall Scott Key, (1779–1843), and was sentenced to a mental institution. The building was also the site of the 1867 trial of John Surratt, an alleged conspirator in the assassination of Abraham Lincoln who was later acquitted. However, Charles J. Guiteau, the assassin of President James A. Garfield, was convicted at the courthouse in 1882. The Old City Hall was the scene of a fugitive slave trial known as the "Pearl incident," which was the largest single escape by slaves attempted in U.S. history. Two men were convicted in 1848 of attempting to free more than 70 slaves by sailing them
Charles J. Guiteau to be the center of attention for once in his life. Guiteau sent a letter in which he argued that Arthur should set him free because he had just increased Arthur's salary by making him president. At one point, Guiteau argued before Judge Cox that Garfield was killed not by the bullets but by medical malpractice ("The doctors killed Garfield, I just shot him"). Throughout the trial and up until his execution, Guiteau was housed at St. Elizabeths Hospital in the southeastern quadrant of Washington, D.C. While in prison and awaiting execution, Guiteau wrote a defense of the assassination he