On Sun, Apr 5, 2020 at 4:29 AM shadow at shadowgard.com (via tml list) <xxxxxx@simplelists.com> wrote:

I recall it. It (and Victoria) are "borrowed" from the 1969 novel
"Prisoners of the Sky" by C. C. MacApp.

I have a copy buried somewhere and recognized it when the adventure
was published.
--
Leonard Erickson (aka shadow)
shadow at shadowgard dot com

Out of curiosity, I googled the above and this came up:

https://archive.org/details/1966-02_IF/mode/2up

It appears to have the full text of the magazine issue in question, including the "complete short novel" (~46 pages with several B&W illustrations).

Richard Aiken

"Never insult anyone by accident." Robert A. Heinlein

"I studied the Koran a great deal. I came away from that study with the conviction there have been few religions in the world as deadly to men as Muhammed." Alexis de Tocqueville

"We know a little about a lot of things; just enough to make us dangerous." Dean Winchester (fictional monster hunter portrayed by Jensen Ackles)

"It has been my experience that a gun doesn't care who pulls its trigger." Newton Knight (as portrayed by Matthew McConaughey), to a scoffing Confederate tax collector facing the weapons held by Knight's young children and wife.