Thanks to a reader for sending in this great scan. He writes:
One of the few times we can see the comparison between Jack’s penciling and Vince Colletta’s ink side by side.
This is a nice page. I’ve suggested in the past Vinnie brought his A-game to Jack’s tabloid material, I think he realized it needed an extra-something for it to reproduce well in those DC B/W books. One has to wonder, was the book this art was planned for cancelled right as Colletta was working on it? Maybe the pages were drying when Vinnie got the phone call. Vinnie probably inked the figures first then went in later to do the backgrounds after the figures had dried.