Typescript transcript of interviews conducted by Sally Smith Hughes, 1979-1980, with her editorial marks. The transcript was never fully reviewed by the interviewee. Tobias discusses his career as a biophysics professor at UC Berkeley and medical physics researcher for Lawrence Berkeley Laboratory. Tobias specialized in radiation biology and is considered the father of heavy ion radiography as a cancer treatment. Interview history prepared by the interviewer, a 38 page transcription of sections of the original interviews prepared by Tobias, biographical information, obituaries, and a copy of a U.S. Dept. of Energy oral history done with Tobias in 1995.