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
John R. Brady shot by an assassin, Charles Guiteau. Arthur, then Vice President, became President. Arthur was at home around midnight on the night of September 19, 1881 with Police Commissioner Stephen B. French, District Attorney Daniel G. Rollins, and attorney Elihu Root, when he learned in a telegram from members of Garfield's cabinet that Garfield had died. The cabinet members wired Arthur their advice that he should "take the oath of office as president of the United States without delay." It was after midnight when Arthur and his guests dispatched messengers to locate a judge who could administer the presidential oath. The