Challengers of the Unknown (1958-1978)

Iss #	Published	Issue Info	Img
29	January, 1963	Four Roads to Doomsday; The War Between the Challenger Teams; Cover by Bob Brown	L
30	March, 1963	Multi-Man... Villian Turned Hero; The Fifth Challenger; Cover by Bob Brown	L
31	May, 1963	The Man Who Saved the Challenger's Lives; Cover by Bob Brown	L
32	July, 1963	One Challenger Must Die!; Cosmo Turns Traitor; Cover by Bob Brown	L
35	January, 1964	Sons of the Challengers; Cover by Bob Brown	L
37	May, 1964	Triple Terror of Mr. Dimension; The Last Days of the Challengers; Cover by Bob Brown	L
38	July, 1964	The Menace the Challengers Made; Time-Bomb on Holdout Island; Cover by Bob Brown	L
45	September, 1965	The Queen of the Challenger-Haters; Cover by Bob Brown	L
48	March, 1966	Twilight of the Challengers; Cover by Bob Brown	L
55	May, 1967	Taps for Red; Cover by Bob Brown	L
56	July, 1967	License to Kill; Cover by Bob Brown	L
57	September, 1967	The Kook and the Kilowatt Killer; Cover by Bob Brown	L
58	November, 1967	Live Till Tomorrow; Cover by Bob Brown	L
59	January, 1968	Seekeenakee - the Petrified Giant!; Cover by Bob Brown	L
60	March, 1968	The Thing That Couldn't Die; Cover by Bob Brown	L
61	May, 1968	The Robot Hounds of Chang; Cover by Bob Brown	L
62	July, 1968	The Legion of the Weird!; Cover by Bob Brown	L
63	September, 1968	One Shall Escape the Walking Evil; Cover by Bob Brown	L