The north and south wings opened on June 23, 1963 and added a significant amount of space to the building. The wings were connected along the rear of the original building and a new entrance created on Cass Avenue. Above this entrance is a mosaic by Millard Sheets entitled "The River of Knowledge". As part of the addition, a triptych mural was added to the west wall of Adam Strohm Hall on the third floor. The mural by local artist John Stephens Coppin is entitled "Man's Mobility" and depicts a history of transportation. This mural complements a tryparch mural on the opposite wall completed in 1921 by Gari Melchers depicting Detroit's early history.