Loutit, John Freeman

Correspondence between John Freeman Loutit and Penrose, consisting of 20 letters, regarding:

• Cases of Fanconi's anaemia being studied by Loutit, and on which Penrose is asked his genetical opinion and to look at family pedigrees. Encloses some handwritten data and calculations, 1947.
• Study of family histories of radiological workers, in connection with the Tolerance Doses Panel of the MRC Protection Sub-Committee. Loutit encloses a memorandum by D G Catcheside "Safety Factors for Genetic Effects of Exposure of Populations to Radiations", to which Penrose replied stating the doses were low, and mutations may not have ill effects in a wild population, 1949-1950.
• Regarding Penrose seeing an employee of the Health Physics Department at Harwell with achondroplasia, and the congenital nature of this condition, also including letters on clashing lectures and cancelled appointments, and Penrose's attendance at a conference on genetics, 1955.

Includes a list sent to Penrose by the British Institute of Radiology of all registered radiological workers since 1926.