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.
Basketball Association of America
When the BAA was founded there were two established professional leagues in the United States: the American Basketball League in the East, founded 1925, and the National Basketball League in Midwestern industrial cities, founded 1937. However, most of the ABL and NBL teams played in small arenas, and in some cases even ballrooms or high school gymnasiums. Walter Brown, owner of the Boston Garden, believed that major ice hockey arenas, which sat empty on many nights, could be put to profitable use hosting basketball games when there were no ice hockey games to be played. To put this theory into practice, the BAA was founded in New York City on June 6, 1946. Maurice Podoloff, who was already serving as president of the American Hockey League, was appointed president of the BAA, becoming the first person to simultaneously lead two professional leagues (Joseph Carr had been president of the ABL from 1925 to 1928 while also overseeing the National Football League, although the NFL and ABL seasons did not overlap).