"The design of St. Louis' downtown Convention Center has been approved by the City Plan Commission, with a recommendation that exterior walls be of Portland cement panels. Metal or cement panels had been proposed for the center's exterior walls by architects for the project, Hellmuth, Obata and Kassabaum and Jenkins-Fleming. Norman Murdoch, commission director, said he felt that rib-faced cement would be mroe attractive, and he strongly favored it if costs could be held within the construction budget. The center will feature a column-free, 240,000 square feet of convention and exhibition space, the equivalent of five football fields in size. In Monday's Globe-Democrat, an incorrect rendering of the center's design was published. The Globe regrets the error. Sverdup and Parcel & Associates, Inc., is in charge of engineering work on the center."