- Folder 1: Stories of humor, news, etc. clipped by Lillehaugen from various newspapers.
- Folder 2: Clippings - Labor
- Folder 3: Clippings - Agriculture
- Folder 4: Clippings - War
- Includes address by Senator Gerald P. Nye in Chicago, December 30, 1937
- Folder 5: Resolutions of local farm groups between WWI and WWII.
- Folder 6: Bylaws - Nonpartisan League, 1930 and 1932
- Folder 7: Correspondence and clippings - North Dakota Hail Insurance programs, 1930-1932
- Folder 8: Clippings - State Banking Problems, 1920s
- Folder 9: Clippings on Prohibition and address by C.C. Converse of Bismarck, "The Proposed Repeal of State Prohibition", November 6, 1932
- Folder 10: Clippings on Lillehaugen and letters to newspapers written by him during his legislative career.
- Folder 11: Clippings - death penalty and compulsory military training in North Dakota schools of higher education during Lillehaugen's legislative career
- Folder 12: Correspondence and clippings - education issues in North Dakota, 1932-1933
- Folder 13: Family correspondence, 1899 (in Norwegian)
- Folder 14: Family correspondence, 1915-1924
- Folder 15: Correspondence from Rev. O. Nilsen, editor of Hallinglaget, with M.T. Lillehaugen, 1921-1933
- Folder 16: Political correspondence, 1926-1933
- Folder 17: Political correspondence, 1934
- Folder 18: Speech notes
- Folder 19: Political petitions, certificates of election, etc., for M.T. Lillehaugen during his legislative career.
- Folder 1: Miscellaneous Farmers Union materials, 1930s
- Folder 2: Clippings from Normanden, a North Dakota Norwegian newspaper
- Folder 3: Miscellaneous newspaper clippings
- Folder 4: Republican National Convention - correspondence, 1952
- Folder 5: Republican National Convention - pamphlets, programs, etc., 1952
- Folder 6: Republican National Convention - campaign literature, 1952
- Folder 7: Miscellaneous items
- includes a report card from a Norwegian school in North Dakota in 1924; Casket list for the North Dakota State Penitentiary; Union Party certificates; and Platform of the Union Party, 1936
- Folder 8: "The Week Day School Information of Value to the Situation in North Dakota," undated
- Folder 9: Pamphlets - "Universal Military Training" and "McCarthyism: The Fight for America"
- Folder 10: "Eulogy on the Life of George Washington" written by Thomas Paine in 1800 and read during the North Dakota legislative session, February 22, 1951
- Folder 11: Correspondence - Whitman Equity Elevator, 1935-1941
- Folder 12: Correspondence, etc. - proposal for a state-owned cement plant in North Dakota, 1950-1951
- Folder 13: M.T. Lillehaugen legislative correspondence, 1951
- Folder 14: M.T. Lillehaugen legislative notes, 1951
- Folder 15: Photographs
OGLMC 960-1: Scandinavian-American Members of the 20th Legislative Assembly, 1927
OGLMC 960-2 through 960-4: M.T. Lillehaugen, undated