Here is the Golden Greek, already dead when the set was issued (as noted on his card):
You can clearly see the Gum Products Inc. copyright, belying a Topps connection. There is however, a connection to an old baseball card set, namely 1941 Double Play, also produced by the same company:
The Boston connection in that scan is intentional on my part as Gum Products Inc. was based there (in Cambridge). GPI also produced a 175 cards set of airplane cards in 1940-41 called Zoom:
GPI also made gumballs sold under the name Jaw Teasers and a few other confectionery products as well in addition to a short series of flip movies issued around the time of Adventure. Boston was a hotbed of candy and gum manufacturers and card issuers in the years leading up to World War 2 and Gum Products looks like they would have been an earnest player had the conflict not come along.
So Adventure, while being a well-executed set, was not a Topps product, despite dozens of eBay listings to the contrary!