A Colorado woman has a silver baby cup engraved "Patricia - 1933. A Century of Progress Chicago." She hopes this 1933 Chicago World's Fair souvenir can unlock the mystery of her mother's unusual start in life. Family lore holds that the Chicago Public Health Board took premature Patricia from her shoebox cradle at home and put her in an incubator at the 1933 Chicago World's Fair. Why were babies exhibited at the fair? Elyse Luray learns about the forgotten doctor who brought life-saving incubator technology to the United States at the turn of the 20th century.