Correspondence between Wilkinson and Dr Thelwall Jones of I.C.I. (General Chemicals) Limited at the Pilkington-Sullivan Works in Widnes. The correspondence focuses on the toxic workers Wilkinson worked on during the World War, 1939-1945, and he is seeking specific data on the workers involved in the investigations in order to write a report. Thelwall Jones sends him data for the workers on the Smoke and 'J' Bomb Plants at Springfields.
The later correspondence from 1947 focuses on the use of BAL for the treatment of mercury poisoning, the doses required, and supplies of it.
For Wilkinson's research files on his work with toxic workers during the war see JFW/2/5/4.