Data courtesy of the Grand Comics Database under Creative Commons license.

Issue Details

Issue	#27
Published	August-September 1962
Cover Price	0.12
Pages	36
Editing	Jack Schiff

Cover Details

Genre	adventure
Pencils	Bob Brown
Inks	Bob Brown

12 page Challengers of the Unknown story "The 1,001 Impossible Inventions"

Genre	adventure
Script	Arnold Drake?
Pencils	Bob Brown
Inks	Bob Brown
Notes	writer id by Bob Hughes

13 page Challengers of the Unknown story "Master of the Volcano Men"

Characters	vs the Volcano Man, 1st; also in 32.
Genre	adventure
Script	Arnold Drake (credit in letters page)
Pencils	Bob Brown
Inks	Bob Brown