Marshak, Robert E. (Robert Eugene), 1916-1992]]> 1957-05-29]]> Ms1988-060, Box 45, Folder 10]]> Letters]]> Bethe, Hans A. (Hans Albrecht), 1906-2005]]> undated]]> Ms1988-060, Box 45, Folder 10]]> Letters]]> Bethe, Hans A. (Hans Albrecht), 1906-2005]]> 1951-05-07]]> Ms1988-060, Box 45, Folder 10]]> Letters]]> Bethe, Hans A. (Hans Albrecht), 1906-2005]]> 1944-04-25]]> Ms1988-060, Box 45, Folder 10]]> Letters]]> Bethe, Hans A. (Hans Albrecht), 1906-2005]]> 1944-04-13]]> Ms1988-060, Box 45, Folder 10]]> Letters]]> Bethe, Hans A. (Hans Albrecht), 1906-2005]]> 1940-12-12]]> Ms1988-060, Box 45, Folder 10]]> Letters]]> Bethe, Hans A. (Hans Albrecht), 1906-2005]]> 1939-07-25]]> Ms1988-060, Box 45, Folder 10]]> Letters]]>