Series I: Correspondence, 1891, 1901-1929 holds incoming and outgoing correspondence.
Series II: Governance, 1904, 1910, 1912, 1914, 1916-1919, 1922-1923, 1927-1931 contains materials on the governing boards of ISNU including the Board of Education, American Association of Teachers Colleges, National Council of Normal School Presidents and Principals, and the North Central Council of State Normal School Presidents.
Series III: Business Affairs, 1900-1905, 1907-1908, 1913-1916, 1918-1922, 1925-1929, 1932 includes budget materials, checks, legislation information, requisitions, and university buildings information.
Series IV: Academic Affairs, 1912, 1918-1920, 1923, 1928-1929 holds reports and faculty staff information.
Series V: Student Affairs, 1902-1905, 1913-1936 contains attendance reports and legislation.
Series VI: President's Office, 1857-1931, 1997, 2000, 2005 includes committee materials, reports, publications, petitions, simplified spelling information, speeches, and World War I information.
Series VII: Photographs, 1917 holds photographs.
Series VIII: Memorabilia, c. 1900 contains David Felmley's presidential portrait.