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
James A. Garfield on a more modest scale than Garfield and Hunt had envisioned, ultimately ending in the construction of the Squadron of Evolution. Garfield was shot by Charles J. Guiteau, a disgruntled office seeker, at the Baltimore and Potomac Railroad Station in Washington, D.C. on July 2, 1881. After eleven weeks of intensive and other care Garfield died in Elberon, New Jersey, the second of four presidents to be assassinated, following Abraham Lincoln. Guiteau had followed various professions in his life, but in 1880 had determined to gain federal office by supporting what he expected would be the winning Republican ticket. He