| Description | Letters received from William Russell, regarding Penrose's "impossible objects", papers for review prior to publication, and regarding an invitation for Penrose to submit a paper at the Annual Research Conference of the Oak Ridge National Laboratory at Gatlinburg.
Enclosed are two draft papers, "The Y-Chromosome as the Bearer of Male Determining Factors in the Mouse", by W J Welshons and Liane Brauch Russell; and "Exceptional Inheritance of a Sex-Linked Gene in the Mouse Explained on the Basis that the X/O Sec-Chromosome Constitution is Female", by W Russell, Liane Brauch Russell, and Josephine Gower. |