1. Adams, G W 9 February 1972 letter to the author
2. Brown, E F 20 November 1974 letter to the author
3. Claringbold, David S 6 November 1974 letter to the author
4. Deux prix internationaux de mathḿatique;Fehr;L'Enseignement Mathématique,1933
5. Last Will and Testament;Fields,1932