David T. Courtwright 
Dark Paradise [PDF ebook] 
A History of Opiate Addiction in America

In a newly enlarged edition of this eye-opening book, David T. Courtwright offers an original interpretation of a puzzling chapter in American social and medical history: the dramatic change in the pattern of opiate addiction–from respectable upper-class matrons to lower-class urban males, often with a criminal record. Challenging the prevailing view that the shift resulted from harsh new laws, Courtwright shows that the crucial role was played by the medical rather than the legal profession.
Dark Paradise tells the story not only from the standpoint of legal and medical sources, but also from the perspective of addicts themselves. With the addition of a new introduction and two new chapters on heroin addiction and treatment since 1940, Courtwright has updated this compelling work of social history for the present crisis of the Drug War.