- 1Correspondence with the Edison Swan Electric Company (BURD/A/02)
1939-1948, sub-series - 2Letter from Edison Swan Technical Services Dept to William Grey Walter, 19 December 1939 (BURD/A/02/13)
19 December 1939, item - 3Letter from J.W. Ridgeway to William Grey Walter, 8 July 1941 (BURD/A/02/16)
8 July 1941, item - 4Letter from K.D.F. Townend to William Grey Walter, 22 July 1941 (BURD/A/02/17)
22 July 1941, item - 5Letter from K.D.F. Townend to William Grey Walter, 10 March 1942 (BURD/A/02/18)
10 March 1942, item - 6Letter from J.W. Ridgeway to William Grey Walter, 23 March 1942 (BURD/A/02/19)
23 March 1942, item - 7Letter from J.W. Ridgeway to William Grey Walter, 8 January 1943 (BURD/A/02/21)
8 January 1943, item - 8Letter from K.D.F. Townend to William Grey Walter, 3 May 1943 (BURD/A/02/24)
3 May 1943, item - 9Letter from J.W. Ridgeway to William Grey Walter, 23 July 1943 (BURD/A/2/25)
23 July 1943, item - 10Letter from J.W. Ridgeway to William Grey Walter, 6 August 1943 (BURD/A/02/26)
6 August 1943, item - 11Letter from C.C. McCallum to Burden Neurological Institute, 3 September 1943 (BURD/A/02/28)
3 September 1943, item - 12Letter from S. Bulmer to William Grey Walter, 3 December 1945 (BURD/A/02/31)
3 December 1945, item - 13Letter from Norman Ellis to William Grey Walter, 18 February 1946 (BURD/A/02/33)
18 February 1946, item - 14Letter from Norman Ellis to William Grey Walter, 1 March 1946 (BURD/A/02/34)
1 March 1946, item - 15Letter from S. Bulmer to William Grey Walter, 21 March 1946 (BURD/A/02/35)
21 March 1946, item
