Campbell family members pose for a photo at the Museum of Science and Industry in Chicago’s Jackson Park. Front row: Nell (Mrs. J. Edgar) Campbell; Irene (Mrs. Roy) Robinette; Laura A. Campbell; Katheryn (Mrs. Richard D.) Leonard. Back row: J. Edgar Campbell; Roy A. Robinette; Alan B. Campbell; E. Verne Campbell, Jr.; Dr. Richard D. Leonard. The photo apparently dates from 1937.