Facilities were not enough; Bacher needed physicists. Lauritsen had made a start on this too, by hiring Robert Christy. Bacher hired experimental physicists Alvin V. Tollestrup, Robert M. Walker and Matthew Sands. The physicist that Bacher decided he wanted most, though, was Richard Feynman. To get him, Bacher offered a large salary, and agreed to pay for Feynman's 1950–1951 sabbatical in Brazil. Feynman would go on to win the Nobel Prize in Physics in 1965. In 1955 Bacher hired Murray Gell-Mann, who would win the Nobel Prize in 1969.