Definitely one of the more curious publications in DC's history--Dr. No?!?
I've heard some rumor--I can't quite remember it all now--that had something to do with someone at DC in the late 1960s going through old files and discovering that, connected to publishing this book, DC in fact had the rights to make James Bond comics all through the 1960s, during what was arguably Bond's most popular time. And they never noticed! Arrrgghhhh!!