Justice League of America 1960 #54 - reader copy - $8.00

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.

Dick wonders why Ed knows so much about everything, and Ed explains it's because he visits the library regularly.

On-sale date from copyright registration.

• The Royal Flush Gang! vs. The Justice League! - Credits for pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics.
• History-Making Costumes of the Royal-Flush Gang! - 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.
• Presenting the Man of the Hour -- Clark Kent! - house ad for Superman (DC, 1939 series) #197 [80 Page Giant #G-36], on sale April 11
• - hint submitted by John Abelson of New Haven, Connecticut
• - letters submitted by Leonard Rosenberg; Earl Krizek; Pittsburgh Sam; Ellen Shipley
• The Seas Quake at His Very Name... - house ad for Aquaman (DC, 1962 series) #34, on sale May 2
• - letters submitted by Mark Gruenwald; Larry Rotolo; Paul Seydor (no editorial responses)
• The Battle That Rocks the Universe! - house ad for The Brave and the Bold (DC, 1955 series) #72, on sale April 20
• - listing of DC comics on sale in late April and early May 1967, with partial cover art from Action Comics (DC, 1938 series) #351
• Mystery of the Million-Dollar Briefcase! - inside back cover; published in cooperation with the National Social Welfare Assembly