In 1929 Boulton began graduate studies at the University of Chicago's anthropology department. In January 1929, Boulton began the first of a series of research expeditions which she was to accompany or lead over the next 50 years, and brought with her a cylinder recorder in order to record folk music as well as bird calls. This trip to Africa under the auspices of the American Museum of Natural History, which lasted approximately three months, allowed Boulton to collect musical instruments and recordings from the indigenous populations of Egypt, The Sudan, Uganda, Kenya and Tanganyika.