That's why I love credits, those and the one in the Rumic book tell a really interesting story of fandom from twenty years ago. Please note that as the work of western artists those books are misc, not non-h, as our definition of doujin/manga/non-h is "asian artists". Western artists, even if their work is inspired by Japanese art and distributed in Japan at Comiket, would still be western. But as this is non-h, a combination of western and non-h makes this misc. If anybody wants to discuss this further, take this to the forums. Viper, thanks for sharing those gems with us!
EDIT: Actually, a discussion on the forums clarified that "It's country of first publication for doujinshi/manga." that influences Western/Eastern division, so it is non-h, not misc.