After reading two or three Hartley Howard's Glenn Bowman novels, I noticed that Thrilling Detective didn't have an entry on him. I sent Kevin Burton Smith (the proprietor of Thrilling Detective) a skeleton entry, which he expanded almost into an article! Here it is, if you want to take a look. There are some errors in the links, but I sent Kevin another note saying about them.
(And thanks, I've just gotten back from the last trip of this Summer and plan to post something in the near future.)