Collector and philanthropist George R. Kravis II has cultivated one of the preeminent collections of industrial design. He established the Kravis Design Center in Tulsa, Oklahoma, to make his collection available to a wide public. He was a communications entrepreneur, forging a career in radio broadcasting, being one of the youngest people to own a jazz radio show and going on to own a number of radio stations. George Kravis is brother to Henry Kravis, the billionaire co-founder of Kohlberg, Kravis Roberts, one of the largest private equity firms in the world. Penny Sparke is a professor in the School of Design and Art History at Kingston University London. She has written extensively on historic and contemporary design.