Analysis of information sources in references of the Wikipedia article "Ace Books" in English language version.
Readers of the first printed version of the novel didn't have far to look if their curiosity about Burroughs' adversaries was aroused. They only had to turn the book over and start reading Narcotic Agent, the account of former policeman Maurice Helbrant that came 69'd with Junky. ... if you've got a spare few thousand pounds, you can pick up a copy of the Ace Original paperback and read Narcotic Agent alongside the original Junky.
In March 1984, I joined Ace Books, as an editor. Thirty years later, almost to the day, I am retiring, from the position of Editor-in-Chief of Ace and Roc Books. I've been very fortunate to work for three decades with many of the same colleagues and, in fact, many of the same authors. I will miss them all—but, since my job came out of my passion for the genre of science fiction and fantasy, I expect that I will be seeing them at conferences and conventions in the future