Metropolitan Police Department of the District of Columbia formed DC Board of Commissioners, established by Congress to govern the entire District. That year as well, Thomas P. Morgan was named to replace Richards, who had resigned, as Major and Superintendent. Although a police fund had been established during the MPD's first year to assist those officers injured in the line of duty, Morgan would add to this by establishing a retirement fund for older officers who could no longer perform their duties. On July 2, 1881, the MPD took part in investigating the assassination of President James A. Garfield. The assassin, Charles J. Guiteau, approached Garfield at the
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