1976 Philadelphia Legionnaires' disease outbreak 1976 Philadelphia Legionnaires' disease outbreak The 1976 Legionnaires disease outbreak, occurring in the late summer in Philadelphia, Pennsylvania, was the first occasion in which a cluster of a particular type of pneumonia cases were determined to be caused by the "Legionella pneumophila" bacteria. Previous outbreaks were retroactively diagnosed as being most probably caused by Legionella bacteria. On July 21, 1976, the American Legion opened its annual three-day convention at the Bellevue-Stratford Hotel in Philadelphia, Pennsylvania. More than 2,000 Legionnaires, mostly men, attended the convention. The date and city were chosen to coincide with America’s celebration of the 200th anniversary of
American Legion part of this was drum and bugle corps competition in which approximately 14,000 members took part. The American Legion Memorial Bridge in Traverse City, Michigan, was completed in 1930. The Traverse City city commission decided to purchase dedication plaques for $100 at the request of The American Legion in 1930. The Sons of the American Legion formed at The American Legion's 14th National Convention in Portland, Oregon, on September 12–15, 1932. Membership is limited to the male descendants of members of The American Legion, or deceased individuals who served in the armed forces of the United States during times specified