The Jesse-Ringo Survey Report of 1957–1958 had strongly recommended the Erdahl-Cloyd Student Union (designed by W.H. Deitrick, an architect and a professor in the School of Design, and opened in 1954) be converted into an undergraduate library; the student union consisted of a cafeteria on the ground floor, recreation space on the first floor and a theatre on the second floor. The conversion to a library was approved in the fall of 1966; however, the university decided to maintain the ground-floor cafeteria due to the lack of food service on North Campus, despite protests from the library directors and staff. As the foundations of the Erdahl-Cloyd Wing were insufficiently strong to support heavy bookstacks, the university decided to locate the Reserve Reading Room and an open-shelf browsing area on the first floor. In June 1972, the student union vacated the building and moved to the new Talley Student Center. Owing to the first floor of the Erdahl-Cloyd Wing being six feet lower than the first floor of the bookstack tower, an elevator had to be installed to bridge the gap; lighting also needed to be improved on the first floor. A 150-seat theatre on the second floor was renovated in 1974, and the Reserve Reading Room occupied the renovated building in May 1975.