Published: June 1967
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Credits for pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics.
"Unless you're an authority on playing cards, you're in for a deck-full of shocking surprises"
When Hal Jordan is gravely injured after retrieving a mysterious parcel, the Justice League must set off on a search for an ancient treasure, which the Royal Flush Gang is also seeking, disguised as various historical and legendary figures.
Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics. Story across 23 pages, but pages 14 and 23 are half-pages.
Dick wonders why Ed knows so much about everything, and Ed explains it's because he visits the library regularly.
inside back cover; published in cooperation with the National Social Welfare Assembly
listing of DC comics on sale in late April and early May 1967, with partial cover art from Action Comics (DC, 1938 series) #351
house ad for The Brave and the Bold (DC, 1955 series) #72, on sale April 20
letters submitted by Mark Gruenwald; Larry Rotolo; Paul Seydor (no editorial responses)
house ad for Aquaman (DC, 1962 series) #34, on sale May 2
letters submitted by Leonard Rosenberg; Earl Krizek; Pittsburgh Sam; Ellen Shipley
"I just broke the propellor blade on my plane."
hint submitted by John Abelson of New Haven, Connecticut
house ad for Superman (DC, 1939 series) #197 [80 Page Giant #G-36], on sale April 11
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