Found two old boards ~2011
A lot of familiar series mostly from the golden days of EC eroge along with a few manga pages. Quite a few have captions identifying where the pictures originate from (in Japanese) figured there might be a few leads to a couple that have been floating around unidentified.
http://board.sweetnote.com/redcampan...1011701113321/
http://board.sweetnote.com/redcampan...1071822400847/