Will you be expanding more on Ajax Penumbra's (or possibly Clay Jannon's) story? Mr. Penumbra's 24-Hour Bookstore is one of my all-time favorite books, and I love how you gave us more of his story in Ajax Penumbra 1969. The only problem is that you seem to have made Mr. Penumbra far too interesting, and now I want even more!
Ha, that's a good problem to have! I have no plans to expand Penumbra's universe at this time, but keep in mind that when I wrote the short story, I had no plans to make it a novel, and when I wrote the novel, I had no plans to write the prequel. So, anything can happen!