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 Legion of Honor
The organization was founded on December 18, 1878 in Boston, Massachusetts by Dr. Darius Wilson and nine others. Some of the founders had participated in the founding of the Royal Arcanum and Dr. Wilson was also connected with the Knights of Honor and was reportedly a members of the Ancient Order of United Workmen.