Typed letter with handwritten corrections from H.J. Muller to Elof Carlson regarding Elof's book "The Gene", Muller's additions to "Out of the Night", and Elof's request to write a biography of Muller, 1966.
Typed letter with handwitten additions and postscript from H.J. Muller to Elof Carlson regarding who to consult about writing a biography of Muller, 1963.
Typed letter from H.J. Muller to Elof Carlson regarding Elof's appointment to UCLA and about the difficulties of presenting resonable eugenics ideas to the public due to the influence of the Nazis and those who continue to think like them, 1960.