Abstract Two unidentified boys from the National Asthma Center perform gymnastics. An unidentified woman watches them while kneeling on the floor with exercise mats. The National Asthma Center's history began in 1907 as the Denver Sheltering Home for Jewish Children, which was a refuge for lower-income children whose parents were being treated for tuberculosis, or had passed away from tuberculosis. In 1928 the institution changed names to the National Home for Jewish Children in Denver. In 1953, the...