I already gave my sales pitch on Mr. Penumbra's 24-Hour Bookstore, but new information has come to...light-- Mr. Penumbra glows in the dark! (The book, that is.) Here is an interesting blog entry by Robin Sloan, the author, on the book's design and its reception. In fact, Sloan's blog is pretty all-around excellent: here, he recommends logical next steps for readers who enjoyed Penumbra. For the impatient (or all of you tl;dr types) he recommends:
A Working Theory of Love by Scott Hutchins
Close to the Machine by Ellen Ullman
The Book in the Renaissance by Andrew Pettegree
The Information by James Gleick
Furthermore, I can also reveal that Sloan and his publishers will be gifting event attendees with free copies of Ajax Penumbra 1969, previously published as an e-book prequel to Mr. Penumbra. For fellow Luddites, it's great to have a print copy (especially a free one!) so come on down to Flyleaf tomorrow night and get a nice bonus.