Typed letter signed, one page, 8,25 x 11 inch, `University of California - Department of Physics` letterhead, (Berkeley), 7.11.1973, in German, reply letter to Mr. Temmen - concerning proton beamy, signed in blue "Emilio Segre", with intersecting letter folds - in nearly very fine condition.
"Sehr geehrter Herr Temmen
Die Frage die Sie stellen ist nicht moeglich im allgemeinen zu beantworten.
Protonenstrahlen koennen manche Krebsgeschwuere toeten und andere nicht, wie das der Fall mit Roentgenstrahlung ist.
Hochachtungsvoll - Emilio Segre"
Translated:
"Dear Mr Temmen
The question you ask is not possible to answer in general.
Proton beams can kill some cancers and not others, as is the case with X-rays.
Yours sincerely, Emilio Segre"
