Capt. Richard J. Walters (retired US Army Balloon Corp) had a large hot air exhibit for the Chicago World's Fair 1933 - 1934. While Amelia Earhart was visiting the Fair, she visited with her friend, Capt. Walters. He showed her his exhibit and then Amelia Earhart when up in one of Capt. Walter's balloons to view the Fair from the air.
at Chicago World's Fair, Chicago, Illinois USA