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 of Immunologists
The AAI was founded on June 19, 1913, in Minneapolis, Minnesota, by a group of physicians who were attending the annual meeting of the American Medical Association. The original 41 members of the society were all disciples of Almroth Wright, the founder and director of the Inoculation Department at St. Mary’s Hospital in London. The first AAI annual meeting was held in Atlantic City, New Jersey, on June 22, 1914.