The information within the Center for Ozarks Studies material encompasses a wide timeframe beginning as early as the mid 1800s and ending in the 1990s. The Ozarks region includes Arkansas, Missouri, and Oklahoma. Most of the material relates to various grants and research projects conducted by the Center. Organized into the following series: I. COS office files; II. Courses; III. Robert Flanders' personal papers; IV. Subject files; V. Forest/fire-free range; VI. Oral history transcripts; VII. Buffalo River oral history project, phase I and II; VIII. Shannon County projects; IX. Shannon County project oral history transcripts; X. Shannon County Current wave; XI. Haseltine family history; XII. Missouri counties; XIII. National register nominations; XIV. Historic inventory surveys; XV. Arkansas; XVI. Tourism; XVII. Sassafras; XVIII. OzarksWatch; XIX. MissouriFind; XX. Publications; XXI. Photographs; XXII. Audio cassettes; XXIII. Reel to reel tapes; XXIV. Postcards; XXV. Oversized materials; XXVI. Slides; XXVII. Maps.