Tea trade in China and Tibet (book)
Michael Freeman, The Tea Horse Road: China's Ancient Trade Road to Tibet (River Books, forthcoming 2011).
Tibetan butter tea or "po cha" updated
Tibetan butter tea or "po cha" combines black tea, salt, milk, and butter. For those who would like to try it--and lack ready access to yak butter and the churn traditionally used to mix the ingredients--here is an updated recipe.
Chinese Gold Prospectors in Early-Twentieth-Century Tibet
This story of early-twentieth-century Tibet by Jamyang Norbu for Phayul.com, a prominent Tibetan website, remembers the Chinese opium-using laborers imported to pan gold in Derge.
Drugs, Diplomacy, and Politics in the High Himalayas
Here is an abstract for "Indifference, Cultural Difference, and a Porous Frontier: Drugs, Diplomacy, and Politics in the High Himalayas," a paper by Alex MacKay (Wellcome Trust Centre for the History of Medicine at UCL) delivered at the Strathclyde University, Glasgow "Drugs and Empires" conference of April 2003.