Typed letter from H.J. Muller to Elof Carlson regarding the birth of Elof's daughter and a manuscript of Elof's with handwritten note from Muller's secretary, Sue Hickham, 1961.
Copy of a typed letter from H.J. Muller to attendees of his 70th Birthday Party or those who expressed their good wishes for his 70th Birthday with original handwritten note to Elof Carlson thanking him for putting together the celebration, 1961.
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.