Bronson worked as a high school mathematics teacher in St. Paul, Minnesota from 1889 to 1899. Beginning in 1900, she led the design of educational exhibits at world's fair expositions including Paris (1900), the Pan-American Exposition in Buffalo (1901), St. Louis (1904), Liège (1905), Jamestown, Virginia (1907), and Seattle (1909). She also held a number of short-term assignments working for the U.S. government, including as a Special Agent for the Bureau of Labor investigating labor conditions for women and children from 1907 to 1909 and Special Agent reporting on the New York shirtwaist strike in 1910.