I've always known Pep 22 to be on the stands in October, 1941, and Jackpot 4 (in Overstreet listed as "same month as Pep 22") when in reality Jackpot 4 was on the stand at the same time as Pep 24, the February 1942 copy. Jackpot was a quarterly book, and the #3 I had had a penciled in date of September 19, 1941, which would put the next issue, #4, on the stands in late December 1941.
Ebayer "The Bigloo" is listing some bound volumes; note the pencilled in arrival dates:
Pep 23: 11/18/1941
Pep 24: 12/17/1941
Jackpot 4: 12/19/1941
Now, will Overstreet please stop saying that Jackpot 4 was the same month as Pep 22? Will people please STOP saying that Jackpot 4 is the 2nd appearance of Archie? Because it's tied for 3rd place with Pep 24.