The John Simon Guggenheim Memorial Foundation was founded in 1925 by Olga and Simon Guggenheim in memory of their son, who died on April 26, 1922. The organization awards Guggenheim Fellowships to professionals who have demonstrated exceptional ability by publishing a significant body of work in the fields of natural sciences, social sciences, humanities, and the creative arts, excluding the performing arts. The roll of Fellows includes numerous Nobel Laureates, Pulitzer and other prize winners.