Published: August-September 1962
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Story Featuring Challengers of the Unknown
"Red and Prof--trapped by that fantastic scientist who's creating volcano creatures in his underground laboratory!"
"His fantastic ray pistol-- it's frozen us into suspended animation!"
Script credit from Bob Hughes.
"Good grief! That thing coming out of the Earth... it--it can't be!"
Script credit from letters page.
Letter Column Featuring Challengers' Mail Chute
"Beginning with the next issue, this space will be devoted exclusively to letters in response to an overwhelming demand by you readers."
First letters page includes an autobiographical piece by Bob Brown and a short bio of Arnold Drake.
Story Featuring Peter Puptent, Explorer
"This mummy we found in the tomb will be something for a museum's collection."
"Golly, that test tomorrow sounds tough!"
The PSA is produced in sequential-arts comics format.
Ad Featuring 100 Toy Soldiers
Back cover.
Ad Featuring Junior Sales Club of America Cards
"Nationally famous prizes for you or big 40% cash profits"
Inside back cover.
Ad Featuring Frontier Cabin
"Big enough for 2-3 kids!"
Ad Featuring Chet Atkins Method
"Learn to play the guitar!"
Ad Featuring Task Force
"America's most exciting war game only $1.00 plus postage"
Ad Featuring Palisades Amusement Park Admission
"Be my guest at Palisades Amusement Park, New Jersey."
"Krypton, the world where Superman was born, lives again!"
"Have you seen the new Comicpac"
"Boys and girls... all Superman DC annuals have 80 exciting pages!"
Ad Featuring American Body Building Club
"Are you skinny like I was?"
Inside front cover.
© 2026 Dollar Bin Longbox. All data courtesy of the Grand Comics Database.