John Frederick "Wilkie" Wilkinson (10 June 1897, Oldham, Lancashire — 13 August 1998, Knutsford, Cheshire) was a chemist, physician, and pioneering haematologist. He was among the first physicians to experiment with chemotherapy for leukaemia. After secondary education at Arnold School, Wilkinson began in 1913 his study of chemistry at the University of Manchester. In 1916 he joined the Royal Naval Air Service. When WWI ended, Wilkinson resumed his study of chemistry at the Victoria University of Manchester, graduating in 1920 BSc with first class honours, in 1921 MSc, and in 1923 PhD. At the same university he became a demonstrator in crystallography, but then studied medicine, qualifying MB ChB Manch in 1928. Experience of the effects of mustard gas in WWI suggested to him that nitrogen mustards might be effective against bone marrow cancers. With Martin C. G. Israëls, Wilkinson experimented with these agents as therapy for patients with leukaemia. In his youth he was extremely active in The Boy Scouts Association. As a scout he was presented with a badge by Baden-Powell in 1919. In 1924 the increasing demands of his medical career caused him to resign from most of his Scouting commitments, but he continued his involvement with Scouting until his death. He had a large and successful private practice mainly at his rooms at Lorne Street, Chorlton-on-Medlock, Manchester, but he sometimes made domiciliary visits in the counties near Manchester. In 1926 George R. Minot and William P. Murphy published their famous paper on feeding raw liver to patients with pernicious anaemia. Wilkinson demonstrated a relation between diet and haematinic activity in tissue by studying stomachs and livers from many species of animals at Manchester's Belle Vue Zoological Gardens and later at Chester Zoo. From 1928 to 1947 at the Manchester Royal Infirmary he was director of the department of clinical investigations and research. In 1931 he graduated with medical research MD from the medical school of the University of Manchester. During the 1930s he once was called upon to delouse the entire ballet company of the Sadler Wells Ballet. From 1934 to 1948 he was a lecturer in systematic medicine at the Victoria University of Manchester. Wilkinson was from 1938 to 1946 the director of the Manchester and Salford Blood Transfusion Service and from 1939 to 1946 a regional officer for the North West Blood Transfusion Service. During the 1940s he, with Frank Fletcher, did pioneering research