Typed letter with handwritten additions from Julian Huxley to H.J. Muller, 1940. Typed letter with handwritten additions from Julian Huxley to H.J. Muller, 1940.
Typed letter with handwritten calculations in the margin from Lewis Mott-Smith to H.J. Muller, 1929. Typed letter with handwritten calculations in the margin from Lewis Mott-Smith to H.J. Muller, 1929.