Correspondence, 1918-1953; account books, 1913-1928 and 1934-1935; ribbons won at livestock shows, 1913-1937; list of births and deaths in the Donovan family, 1802-1877; autobiographical sketch of brother Leo, 1938; writings and lectures by Brother Leo; and clippings about Brother Leo.

Certificate of entry into the United States, 1888; citizenship papers, 1898; tax returns and investment (1917-1924) and estate (1922-1926) records; and a report of Notre Dame's acquisition of stock from O'Connell's estate, 1938.