http://ri45z7etufyc3vmgzwru2mieq6m5rakza5xihyjb6chvxkse5f5f2gqd.onion/Guestbook
They usually contain all the images that were used (the "DL" is a link to do a direct download of each), but the first image link is always click to download the PDF File. The PDFs are I think at least 300dpi, most I think 600dpi and uncensored (better that pixiv).