A core Library provides state, county, city and family histories, biographies, geological and archaeological reports, and an impressive assortment of works on various Indian tribes and the development of education in Oklahoma.
- Oklahoma Townsite Case Files: reproductions of approximately 100,000 documents from land disputes following the settlement of Oklahoma.
- Sanborn Fire Insurance Maps: 1867-1950, for Oklahoma, show the location of schools, churches, businesses, and other town/city building details.
- Census Records: include the first Territorial Census 1890 covering seven counties in Oklahoma and Indian Territory, Federal Population Census including indexes for 1900, 1910, and 1920, and the Dawes Rolls for the five Civilized Tribes of Oklahoma.
- The Indian Pioneer History Collection: oral histories collected by the WPA during the depression. They contain recorded memories of Indians and Pioneers focusing on pre and early statehood days in Oklahoma.
- Letters received by the Office of Adjutant General (1870-1889): containing correspondence relating to attempted removal of cattlemen from Indian Territory and problems related to the opening of Oklahoma to public settlement.
- Returns from U.S. Military Posts (1800-1916): records relating to the operation of military posts in Oklahoma.
- Early newspapers for towns in Oklahoma Territory: over 109 newspapers are represented in this collection.
The Special Collections are comprised of the Memorial Book Collections, Manuscript Collections, University Archives and Photograph Collections.
- Memorial Book Collections: include the library holdings of former legislator William Edgar Gill, former distinguished faculty John George and Jimmy Rogers, and distinguished former students Dale Edward McConathy, Bill Burchardt, J. Wendell Simmons, Sr.
- Manuscript Collections: consist of a large selection of the personal papers of individuals and the records of organizations not directly within the administrative structure of the University. Other valuable primary source collections on the history of Oklahoma and the University are also among these holdings including family histories in audiovisual formats.
- University Archives: records generated by the schools, departments, and offices of the University, including administrative papers, Masters Thesis, photographic negatives, slides and prints, audio/visual tapes, architectural plans and blueprints, University publications, scrapbooks, artifacts, and ephemera.
- Photographic Collections: includes over 20,000 images of University life, Edmond, and scenes of Oklahoma people, buildings, settlement, and other events from 1893 to the present.