6 autograph letters signed and 13 typed letters signed from Hayward to ANLM; 6 copy typed letters from ANLM to Hayward. The file also contains:
- copy typescript 'The origin of off-prints' by ANLM;
- 1 typed letter signed from J. F. Burnet to ANLM, 3 Dec. 1953 and 2 copy typed letters from ANLM to Burnet, 1 and 9 Dec. 1953;
- copy typed letter from ANLM to P. H. Muir, 7 Dec. 1953, and 1 autograph letter signed from Muir to ANLM, 8 Dec. 1953.