Cup of Tea
Cup of Tea is a story written by Hyakunichisou 13. It ran in Issue 44 at http://s2b2.livejournal.com/257577.html, and is mirrored at http://www.shousetsubangbang.com/mirror/cup-of-tea/.
From fail-fandomanon.dreamwidth.org: "An archivist meets cute with a guy donating his family archive of photos, many of them erotic (including vintage Hamlet cosplay!)."
From pinboard.in: "Allan goes to a potential donor's house to appraise the collection to be donated. He wasn't expecting the collection to be a bit more exciting than he thought. (Victorian photo porn~)"