| Description | Manuscript. Two letters to Karl Pearson asking for permission to reproduce diagrams in <i>Biometrika</i>, volume 10, numbers 2-3, November 1914, for his own article on "Inheritance of Mental Disease" to appear in the <i>Journal of Neurology and Psychopathology</i>; and one letter to David Heron who wrote the <i>Biometrika</i> article in which the diagrams appear. |