The William H. Powers Papers consist primarily of handwritten and draft materials authored by Powers concerning the institutional history of South Dakota State College. The collection also includes general correspondence, correspondence with entomologist J.M. Aldrich, and documents specifically focused on the founding and development of the Brookings Public Library. Additional writings by Powers reflect his historical interests and biographical sketches, including materials related to figures such as Robert F. Kerr and Pamelia Phillips Banks-Warriner, and topics like the McLouth administration and the Upheaval of 1893. A small number of items pertain to unrelated activities, including World War I-era materials from the World Disarmament Committee and a 1917 anti-conscription petition signed by faculty. The collection also contains a certificate of membership in the South Dakota Academy of Science.

These papers document William H. Powers' historical research on South Dakota State College and his civic involvement in Brookings, South Dakota. His notes and correspondence offer insight into early 20th-century library development, academic perspectives on military conscription during World War I, and efforts to preserve institutional memory. The collection is particularly valuable for understanding early initiatives related to the Brookings Public Library and faculty engagement in national and local issues.