Over at The Private Library, two good posts on collecting bibliomysteries: Part I, Part II. I didn't know of a few of the early ones mentioned, and many of the others there are great reads indeed.
The author notes: "A reasonably up-to-date checklist of articles and books about bibliomysteries (including some tentative bibliographies of this sub-genre) has been compiled by the Graduate School of Library and Information Science at Simmons College in Boston. The school's checklist of its own collection, as well as its wishlist, make for a handy set of online bibliographies for this sub-genre...."
Indeed - the Simmons list provided constant fodder if I needed a bibliomystery fix while I was supposed to be doing class-work.