After the barbecue Roosevelt was to attend a minstrel show staged by the polio patients at the Playhouse. Hazel Stephens, a physical therapist and the recreational director, coordinated the production. Betty Brown, also a therapist who helped with the patients, assisted her. The curtain was set to go up at 5:30 P.M.[…] Graham Jackson, a black recruiting officer in the Coast Guard at Macon, Georgia, was Roosevelt's favorite musician. He had performed for him on numerous occasions and was scheduled to do so again at the minstrel show. He was equally talented playing the accordion or the piano. A moving photograph of a tearful Jackson with his accordion at the Warm Springs ceremonies was circulated worldwide.
Source: wiktionary