|Uploaded by SteveD who says:
"A remarkable Pyramid scan of one of the rarities of Wolverton one-offs: a wonderful 7-page FLAP FLIPFLOP story in an obscure CHARLTON title!
Obviously Timely was unconcerned about those character properties that would later become the holy grail of the funnybook industry, since FLAP had been consistently appearing in Timely titles, since his debut in the 1st issue of KID Comics in 1943. A few other Timely appearances including 3 in Gay Comics, and 1 in the 2nd run of Krazy Comics, but this 1947 Charlton book was apparently a sale Wolverton chose to make to whatever client he could, though oddly enough Flap made one more appearance in Timely publications AFTER this Charlton story appeared.
Granted, this is getting near the end of Wolverton's humor stories in Timely books, and he may very well have been selling stories with no clue where Stan Lee and the ever-fluid editorial staff at Timely would publish them. Perhaps he'd hit some sort of saturation level of pages sold to them in 1947, and he shopped a fine laugh-riot of a story to any publisher who'd snap it up, especially one such as JACK-IN-THE-BOX, which is uttlerly Unfunny except for the Wolverton tale.
Or, knowing Timely's skeevy business practices, perhaps Timely bought the story from Wolverton and then Timely re-sold the story to Charlton for reasons which will remain obscure until Sadowski's next volume appears."