Biography:

Harry Arista Mackey (June 26, 1869 – October 17, 1938) was an American football player and coach, lawyer, and politician. He served as the Mayor of Philadelphia from 1928 to 1931.
Born in Susquehanna, Pennsylvania, and a native of Bangor, Pennsylvania, Mackey was educated at the Scranton High School, Keystone Academy, Lafayette College, and the University of Pennsylvania Law School. He played football and baseball at Lafayette, where he captained both squads during the 1889–90 academic year. At Penn, he played football from 1891 to 1893, serving as team captain in 1893.
Mackey was admitted to the bar in Philadelphia in 1894. He served as the head football coach at Pennsylvania Military College, now Widener University, in 1894, and at the University of Virginia in 1895, compiling a career college football coaching record of 12–5.
Mackey died in 1938 in Philadelphia as the result of an automobile accident.