Colossal Comic #16 has a proxy cover date 1 January 1961 courtesy of an advertiser's date code. The cover is unsigned but certainly appears to be by Hart Amos:
This cover promotes the other ongoing series featuring DC characters published at the time by KG Murray. The focus of this promotion appears to be the expanded page count of the titles boasting 116 pages, the earliest of which appeared very late in 1960.
The story contents:
The Invisible Clues!, originally published in
Gang Busters #47, August-September 1955
The Superman Stamp!, originally published in
Superman #91, June 1954
The Mystery of the Four Batmen!,
Batman #88, December 1954
The Son of Batman!, originally published in
Batman #88, December 1954
There are some notable editorial interventions in the reproduction of some of these stories. The Return of the Bat-Hound! is an 8-page story, but this version is expanded to 10 pages - two pages have been blown up to three panels per page. Haunted Superman! and The Spectral Superman! each have their final pages reduced to fit, which is far more common in such issues. The Varmint and the Wizard! has grey tone shading. My guess is that each of these modifications is present in previous KGM publications. TBC.
I've been collecting KGMs of this period for over 25 years, and those of us obsessed by such things had not spotted a copy. As recently as a couple of years ago James was querying whether we should deem this issue non-existent. Shortly afterwards a collector came forward with a cover scan of his copy wondering what all the fuss was about. Naturally I offered him my kidney for it, but my generous offer was rebuffed. This copy appeared on eBay a week ago so I kept my kidney but paid more for this than I've ever paid for a KGM. So of course, another copy turned up on eBay the next day. It's still scarce, but not as scarce as it used to be.
Update 9 July 2025: James has confirmed the altered versions of these stories were previously published in KGM pamphlet issues, as suspected.