Comic Title: Justice League of America #54
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: June 1967
On Sale Date: April 25, 1967 Newsstand Date April 25, 1967
Source: Direct Currents, Batman #192, Page 30

Newsstand Date April 25, 1967
Source: Newsdealer Magazine, V22 #2

Copyright Date April 25, 1967
Source: Library of Congress, Periodicals 1967

Frequency: Monthly, with the exception of Jan., Apr., July & Oct.; (semi-monthly, Nov.)
Cover Price: $0.12
Page Count: 32
Editor: Julius Schwartz

Title: "History-Making Costumes of the Royal Flush Gang"
Pages: 23

Feature(s):
Justice League of America (of Earth-1)

Writer: Gardner F. Fox
Penciller: Mike Sekowsky
Inker: Sid Greene

Reprinted In:
Justice League of America Archives Vol. 7 HC (2001)
Showcase Presents:Justice League of America Vol. 3 TPB (2008)
Justice League of America:The Silver Age Omnibus Vol. 2 HC (2016)

Feature Character(s)

• Justice League of America (last appearance in Action Comics #350; next appearance in Justice League of America #55)
• Batman (last appearance in Batman #192; next appearance in Detective Comics #364)
• Wonder Woman (last appearance in Superman's Girl Friend, Lois Lane #74; next appearance in Wonder Woman #171)
• Flash (last appearance in Brave and the Bold #72; next appearance in Flash #172)
• Atom (last appearance in Atom #31; next appearance in Atom #32)
• Martian Manhunter (last appearance in House of Mystery #167; next appearance in House of Mystery #168)
• Green Lantern (last appearance in Green Lantern #53; next appearance in Green Lantern #54)

Villain(s)

• Professor Amos Fortune (as the Ace of Clubs and the Serpent Man; last appearance in Justice League of America #43; next appearance in Joker #5)
• Royal Flush Gang (last appearance in Justice League of America #43; next appearance in Joker #5)
• King (aka King of Clubs; last appearance in Justice League of America #43; next appearance in Joker #5)
• Queen (aka Queen of Clubs; last appearance in Justice League of America #43; next appearance in Joker #5)
• Hi-Jack (aka Jack of Clubs; last appearance in Justice League of America #43; next appearance in Joker #5)
• Ten (aka Ten of Clubs; last appearance in Justice League of America #43; next appearance in Joker #5)

Other Character(s)

• Alvin Marley (an explorer; dies in this story; no further appearances)
• Irene Marley (Alvin's daughter; no further appearances)
• Oleg Kormann (a bookstore owner; no further appearances)
• Dr. Clay Rockwell (a brain surgeon; no further appearances)

Synopsis:
Hal Jordan ends up hospitalized when he tries to deliver a treasure map for an explorer who died in a car crash. Aware that Hal is secretly Green Lantern, the Flash calls the Justice League in to complete the mission, only to find not only Hal, but also others, under attack by characters dressed as a knight, a judge, a queen, a serpent, and a Greek warrior.

Batman deduces that their foes are actually the Royal Flush Gang, since, according to the history of cards, the King of Clubs was derived from Alexander the Great, the Queen from Queen Elizabeth I, and the Jack from Sir Lancelot, while the ace is called a serpent in Spanish, and three tens, in poker, is called a Judge Duffy.

Deciphering the treasure map as best they can, the Gang locates ancient weapons and books saved from the lost libraries of the ancient world, which they use against Batman, Flash, J'onn J'onzz, Wonder Woman, and the Atom. The JLA wins the battle, but the ancient scrolls and weapons are destroyed.