Sorry for the delay, this has been available for a few months now.
After previous releases documented the Charlton work of Ditko (mostly with Joe Gill) from 1971, 1972 and 1973, this year goes back in time in INTRODUCING CAPTAIN ATOM - DITKO AT CHARLTON: 1960.This features 22 stories published by Charlton in 1960 with Ditko artwork, a total of 124 pages. That includes the first eight Captain Atom stories, the first on-going super-hero feature that Ditko worked on. Joe Gill is likely the uncredited writer on most, if not all, of the stories.
A fertile time for Ditko, with a lot of imaginative layouts and storytelling innovations.
Also included are the 19 Charlton covers with Ditko art from that year, which are all, as was the style at Charlton at the time, composed of a montage of images from interior artwork.
I've previously posted about one story here.
This is a print-on-demand book, available from many book sellers using the ISBN
ISBN-10 : 1945307390
ISBN-13 : 978-1945307393
It might also be available direct from the publisher, check here for contact information.