Another of his best-known buildings is the Mummers Theater in Oklahoma City (1970), an aggregation of fragmented units connected by walkways and tubes. It received an AIA award in 1972. The theater, more recently called Stage Center, was demolished in 2014 after years of maintenance costs and a June 2010 flood led to its closure and consideration of alternative uses or demolition. In 2013 its owners declined a listing on the National Register of Historic Places. In July 2013 it was reported that the building would be sold, demolished, and replaced by a new 20 story tower; on January 16, 2014, the city's Downtown Design Review Committee voted 3–2 to approve demolition and make way for a new headquarters building for OGE Energy Corp. and a second building. Demolotion began in July and was completed by October 2014.