Gary Frost, guest lecturer in rare book conservation and conservator emeritus at the University of Iowa Libraries, is responsible for everything related to book structure and its conservation. His classes delve into the history, materials, techniques, and treatment of rare and circulating books and bound materials. Frost teaches and guides students through the production of historical book models, protective cases, and cradles for exhibitions as well as full conservation treatments on bound materials of all types. He and the University of Iowa Libraries conservation lab host two first-year graduate students during their first summer to conserve and treat books that hone their skills, and complement with the book conservation projects already assigned to them for their second year. The Mellon Foundation generously funds Gary Frost's visits to the department.