Challengers of the Unknown 1958 #77 - back issue - $5.00

On-sale date from the Direct Currents page of From Beyond the Unknown (DC, 1969 series) #8 and copyright registration.

• Mean Maverick - Inside front cover.
• The Menace of the Ancient Vials! - Previously inker listed as Marvin Stein. Per Stein's conversations with Greg Theakston, he did not ink any Challengers stories.
• The World's Fastest Big Racers! - Ad for Kenner's SSP Racers.
• [The Menace of the Ancient Vials!] Chapter Two: The Fire Being! - Previously inker listed as Marvin Stein. Per Stein's conversations with Greg Theakston, he did not ink any Challengers stories.
• Coin Curios - On the page between the 2nd and 3rd pages of the previous story sequence.
• - Ad for a stamp collectors' catalog from Mail Sack Inc. On the page between the 2nd and 3rd pages of the previous story sequence.
• [The Menace of the Ancient Vials!] Chapter Three: The Demon from the Depths! - Previously inker listed as Marvin Stein. Per Stein's conversations with Greg Theakston, he did not ink any Challengers stories.
• [The Menace of the Ancient Vials!] Chapter Four: The Deadly Duplicates! - Previously inker listed as Marvin Stein. Per Stein's conversations with Greg Theakston, he did not ink any Challengers stories.
• Here Come the Zingers! - Model Products Corporation. On the page between the 2nd and 3rd pages of the previous story sequence.
• - On the page between the 2nd and 3rd pages of the previous story sequence. Includes Action Comics.
• - On the page between the 4th and 5th pages of the previous story sequence.
• - Letter from Jim Vecchio and snippets of other readers' letters.
• Task Force / Tank Trap - Ad for two games from Helen of Toy, Co.
• - Inside back cover.
• Skittle Pool - Back cover.