A revised version is published in book form by Northern Illinois University Press, 2008, ISBN 9780875803869. Mold, A. Heroin : the treatment of addiction in twentieth-century Britain. Part of Chapter 1 is drawn from the article Mold, A. "The ‘British System’ of Heroin Addiction Treatment and the Opening of Drug Dependence Units, 1965–1970" Social History of Medicine, Dec 2004; 17: 501 - 517, DOI 10.1093/shm/17.3.501