This series contains Miller’s personal diaries and account books for the years 1909-1973. The account books range in date from 1909-1962 and document Miller’s personal and professional expenses (particularly research related expenses). The 1912-1913 Accounting Book from the University of Chicago-School of Education details the cost of a boy’s field trip out west. The diaries range in date from 1917-1973. Some diaries are single years while others are multiple year volumes.