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 Catholic Historical Association
The American Catholic Historical Association (ACHA) was founded by Peter Guilday in Cleveland, Ohio, in December 1919 as a national society to bring together scholars interested in the history of the Roman Catholic Church or in Catholic aspects of secular history. It aims to promote a deeper and more widespread knowledge of the history of the Catholic Church and the advancement of historical scholarship. The ACHA has always enjoyed the support of Catholic universities, colleges, and seminaries and has endeavored, in turn, to make itself especially helpful to their teachers and students. It welcomes non-Catholics among its members and has elected many of them to its committees, its executive council, and even its presidency. There are approximately 1,100 members.