Given on 7 May 1984 in the California Institute of Technology. This looks like Pontecorvo's own typescript copy with some annotations.
The Jean Weigle Memorial Lecture titled Reminiscences on genetics, by Guido Pontecorvo published in Topics in genetic analysis: selected works of Guido Pontecorvo, India Academy of Sciences (Bangalore)
Scope and Content
Administrative / Biographical History
Jean-Jacques Weigle (1901-1968) was a Swiss molecular biologist at the California Institute of Technology (CalTech) and a former physicist at the University of Geneva from 1931 to 1948. He is known for his major contributions on field of the bacteriophage research.