Passions of the Cut Sleeve, by Bret Hinsch

Hinsch, Bret. (1990). Passions of the Cut Sleeve: The Male Homosexual Tradition in China. Berkeley: University of California Press. 232 pages.

The definitive work (in English, at least) on male homosexual topics in pre-modern Chinese history. Not difficult to read. Substantial use of primary sources, both historical and literary. Pete owns a copy. Available from the SF Public Library in print and digitally.