Professor. Correspondence (1916–1942); freshmen English placement exams and results (1936–1940); and English department circulars and course outlines (1929–1940) from the University of Oklahoma; a report of an audit (1905) of the university’s finances; manuscript accounts by Hadsell of the early history of the University of Oklahoma, including “[Vernon L.] Parrington in Oklahoma” (n.d.), “A History of the University of Oklahoma” (1929), and “Twenty-Eight Years After” (1928), which relates Hadsell’s experiences with the 1900 expedition of the Oklahoma Geological Survey, plus a typescript of Hadsell’s diary from that expedition.