More links and websites
More suggestions and sources
Eldred-Grigg, Stevan. Pleasures of the flesh: sex and drugs in colonial New Zealand, 1840–1915. Wellington: Reed, 1984.
Ng, James. Windows on a Chinese past. Vol. 2. Dunedin: Otago Heritage Books, 1995.
Yska, Redmer. New Zealand green: the story of marijuana in New Zealand. Auckland: David Bateman, 1990.