Go Mishima, Tatsuji Okawa, and Sanshi Funayama are some of the artists represented in the newly published and already essential "Gay Erotic Art in Japan," compiled by erotic art master Gengorah Tagame himself.

"Gay Erotic Art in Japan" (includes sample pages and English ordering information)
See also: Tagame
Go Mishima (Tom of Finland Foundation)
Tatsuji Okawa and Sanshi Funayama (Tagame.org)