Robert Rauschenberg paved the way for pop art in the 1960s with Jasper John by using non traditional materials. He used a mixture of sculpture and paint in work he called combines, as seen in The Bed (1955). From the late 1950s, he started incorporating sound and movement in his works and also silk screen transfers. Examples of this are his works Broadcast (1959) and Flush (1964). In the 1980s and 90s, he started experimenting with collage and different ways to transfer photos. In 1997, the Solomon R Guggenheim museum, New York City, staged an exhibition of his work.