House of Mystery 1951 #156 - 2.0 - $14.99

A group of kids discover the library.

Teen genius Robby Reed discovers a mysterious dial that can transform him into different super-heroes when he dials the letters "H-E-R-O". He uses his newfound powers to battle the Thunderbolt Gang, but their leader, Mr. Thunder, escapes.

The prophecy of the Book of Diabolu foretells that if the Manhunter touches the latest monster to appear from the Idol-Head, he will disappear.

On-sale date from house ad in All-American Men of War (DC, 1952 series) #113 and copyright registration.

• The Magic Card! - Inside front cover. Published in cooperation with the National Social Welfare Assembly. Previously appeared in DC comics cover-dated February 1959.
• Dial H for Hero - Script credit from Rich Morrissey.
• What's Happenin' on Route 66? - Follows page 7 of the Dial H for Hero story.
• They're Old! They're Worth Gold! And Now They're Re-Told! - House ad for Superman (DC, 1939 series) #183 [80-Page Giant #G-17].
• The Champ Wins Again! - Follows page 7 of the Dial H for Hero story.
• The Beginning -- and the End! - House ad for Detective Comics (DC, 1937 series) #347, on sale November 25th. Follows page 14 of the Dial H for Hero story.
• Thunderbird and Chaparrall II - Follows page 14 of the Dial H for Hero story.
• Special S1 Subscription Form - Subscription form for House of Mystery, House of Secrets, Strange Adventures, and Mystery in Space.
• - Follows page 6 of the Manhunter from Mars story.
• - Follows page 6 of the Manhunter from Mars story.
• - House ad for Showcase (DC, 1956 series) #60 featuring the first Silver Age Spectre story, on sale November 25th. Follows page 11 of the Manhunter from Mars story.
• Hear This! Read This! - Inside back cover.
• More Features! More Fun! - Back cover.