There is at least one other Golden Age non-canditate with a similar plot for your desired story, from 1941, in "Big Shot Comics" issue No. 19 (November Issue - usually on the newsstands one month BEFORE The printed date). The Marvelo (The Magician) story, has a villain who uses a trained ape (chimpanzee) who apparently stole top secret US military papers (future battle plans and strategies for The Pacific Fleet operations). We see the ape throwing a dagger from the top of a nearby building, down at the street below, aimed at Marvelo. And we are told that it was the same dagger that murdered the man whose body Marvelo was inspecting. The villain in this story (an evil magician named Ramun) planned to sell the plans to a Japanese agent, who will deliver them to a Japanese military representative.
Unfortunately, we know that this is NOT the story for which House Breath is looking, as it is a trained ape, not monkey, and there is no organ grinder in the story. In addition, we don't see a monkey climb up the tall building, look through the window and spray the protagonist (hero?) with a knockout gas.
Yet, I suspect that the story he seeks has a very similar plot to both this story and the 1943 Donald Duck story, and like the latter, was also printed during WWII. I find it interesting that the Big Shot Comics story was printed a few months BEFORE The Japanese sneak attack on Pearl Harbor, and The US entry into The War. it was President Franklin Roosevelt's policy at that time to appear neutral, despite sending much aid to Britain starting in early 1940. But, apparently, The US public was aware they would be at war in The Pacific within a year, as demonstrated by this story. Of course it was obvious, based on The US embargo of oil from going to Japan, and its building up of its armed forces starting in early 1940.
I, myself, was born 2 months after the end of The War, and my father served in The Canadian Army from 1942-44, and participated in The D-Day landings in Normandy.
I hope someone on this forum can find the story House Breath seeks, as it will be interesting to see IF it has a very similar plot to the other two I've brought up, and if it was the first of the three to be printed.
For any members who are very familiar with The Marvelo character - I am curious as to whether or not this story was condensed down from several daily or Sunday episodes from a newspaper strip, to be made into this, short stand-alone "story", because a lot of the interesting action, such as the ape's stealing the papers, or helping Ramun obtain them was not shown in the panels. Clearly, the stabbed US Naval Intelligence agent had to hand them to Ramun. I can't help but think that there were many panels cut out of the newspaper version to form this condensed story. Otherwise, in my opinion, the scope of this story is too broad to fit decently into the mere 6 pages in this comic book, and too much of the interesting action is only described in dialogue, when it should be shown in artwork.