Scope and content Oral history interviews with Hans Bethe conducted by Charles Weiner and Jagdish Mehra on Oct. 27-28, 1966, Nov. 17, 1967, and May 8-9, 1972. Subjects include natural radioactivity; ideas of nuclear constitution, size in 1920s; Gamow-Condon-Gurney theory of alpha decay, 1928; discovery of the neutron, 1932; Cambridge as a center of research, 1933; early theories of nuclear forces; analysis of short-range nuclear forces, 1935-1940; reasons for writing Reviews of Modern Physics review...