American Heart Association
The American Heart Association grew out of a set of smaller precursor groups. The primary precursor was the Association for the Prevention and Relief of Heart Disease, formed in New York City in 1915, to study whether patients with heart disease could safely return to work. Several similar organizations formed or evolved in Boston, Philadelphia, and Chicago in the 1920s. Recognizing the need for a national organization to share research and promote findings, the American Heart Association was formed in 1924 by six cardiologists representing several of these precursor groups.
American Association (American football)
The American Association (AA) was a professional American football league based in New York City. Founded in 1936 as a minor league with teams in New York and New Jersey, the AA extended its reach to Providence, Rhode Island prior to the onset of World War II. After a four-year hiatus, the league was renamed the American Football League as it expanded to include teams in Ohio and Pennsylvania. In 1947, the Richmond Rebels of the Dixie League purchased the assets of the defunct AFL Long Island Indians and jumped leagues (causing the demise of the DL).