My recollection from the very early 60s (maybe 61/62/63 in MA) was that there were rack packs, likely repackaged from Topps overstock at end of year, and that I would receive a couple of packs each Christmas as a 6/7/8 year old. I believe that they were sold at a local Woolworth's 5 & 10 (similarly, bundles of repackaged comic books were also sold there). The text in the blog at the following URL seems to support that:
https://sabrbaseballcards.blog/author/statsfax/
The story (set in MI I think) proceeds chronologically so scroll down to 1963 to see the rack pack reference if you're not wanting to read the entirety.
Also check out the posting at this URL where the author recounts his Woolworth's experience (in CA) from 1959.
https://ladodgertalk.com/2020/12/27/...hings-dodgers/
Neither of these authors seem to have any agenda with respect to repackaged rack packs... they're just telling their story.