His 123-page scientific racist publication The Mongol in our Midst (1924) was both popular and controversial in both England and the United States. In 1931, Crookshank published a "greatly enlarged and entirely rewritten" 524-page edition "with numerous illustrations," with responses to critics and additional theories and claims.[4] That work incorrectly associated the disorder now known as Down syndrome with the admixture of Asian and European "blood".[5]
Chapter on medico-legal aspects. etc., in L. W. Harrison, The diagnosis and treatment of venereal diseases in general practice, London: H. Frowde and Hodder & Stoughton, 1921
‘The relation of history and philosophy to medicine’, in Charles Greene Cumston, An introduction to the history of medicine, from the time of the pharaohs to the end of the XVIIIth century, London: K. Paul, Trench, Trubner & co, 1926
'Individual Psychology: A Retrospect (and a Valuation)', prefatory essay to Alfred Adler, Problems of neurosis: a book of case-histories, ed. Philip Mairet, London: K. Paul, Trench, Trubner, 1929, pp. vii-xxxvii
^ abThomson, Mathew (2006) Psychological subjects: identity, culture, and health in twentieth-century Britain, Oxford University Press, ISBN0199287805, p. 86.
^Keevak, Michael (1 January 2011). Becoming yellow : a short history of racial thinking. Princeton University Press. ISBN9780691140315. OCLC713342093.
^Crookshank, Francis (1931). The Mongol in Our Midst: A Study of Man and His Three Faces. London: Kegan Paul, Trench, Trubner & Co.
^Howells, John G. and Osborn, M. Livia (1984) A reference companion to the history of abnormal psychology, vol. 1, Greenwood Press, ISBN0313242615, p. 217.