Comic Title: Justice League of America #46
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: August 1966
On Sale Date: June 9, 1966 Newsstand Date June 9, 1966
Source: Direct Currents, Adventure Comics #346, Page 16

Copyright Date June 9, 1966
Source: Library of Congress, Periodicals 1966

Frequency: Monthly, with the exception of Jan., April, July and Oct.; (semi-monthly, Nov.)
Cover Price: $0.12
Page Count: 32
Circulation: 389427
Editor: Julius Schwartz

Title: "Crisis Between Earth-One and Earth-Two"
Pages: 24

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. 6 HC (2000)
Crisis on Multiple Earths Vol. 1 TPB (2002)
Showcase Presents:Justice League of America Vol. 3 TPB (2008)
Justice League of America:The Silver Age Omnibus Vol. 2 HC (2016)
Crisis on Infinite Earths Box Set HC (2020)
Crisis on Multiple Earths:Crossing Over TPB (2021)

Feature Character(s)

• Justice League of America (last appearance in Justice League of America #45; next appearance in Justice League of America #47)
• Batman (of Earth-1; last appearance in Batman #183; next appearance in Justice League of America #47)
• Flash (of Earth-1; last appearance in Flash #163; next appearance in Justice League of America #47)
• Green Lantern (of Earth-1; last appearance in Green Lantern #47; next appearance in Justice League of America #47)
• Atom (of Earth-1; as Ray Palmer; last appearance in Atom #26; next appearance in Justice League of America #47)
• Hawkman (of Earth-1; last appearance in Justice League of America #45; next appearance in Justice League of America #47)

Guest Star(s)

• Justice Society of America (last appearance in Justice League of America #38; next appearance in Justice League of America #47)
• Doctor Fate (last appearance in Justice League of America #38; next appearance in Justice League of America #47)
• Doctor Mid-Nite (last appearance in Flash #159; next appearance in Justice League of America #47)
• Sandman (first Silver Age appearance; last appearance in Justice League of America #113; next appearance in Justice League of America #47)
• Black Canary (last appearance in Brave and the Bold #62; next appearance in Justice League of America #47)
• Wildcat (last appearance in Brave and the Bold #62; next appearance in Justice League of America #47)
• Spectre (last appearance in Showcase #61; next appearance in Justice League of America #47)

Villain(s)

• Anti-Matter Man (an explorer from another dimension; next appearance in Justice League of America #47)
• Solomon Grundy (last appearance in Showcase #55; next appearance in Justice League of America #47)
• Blockbuster (last appearance in Detective Comics #349; next appearance in Justice League of America #47)
• A gang of fur hijackers, a gang of armored car robbers, a gang of bank robbers, and a gang of jewel thieves (no further appearances)

Guest Appearance(s)

• Enrichetta Negrini (last appearance in Atom #23; next appearance in Justice League of America #47)

Other Character(s)

• An unnamed scientist, a groom, a bride, a golfer, a boxer, and other inhabitants of Earth-1 and Earth-2 (no further appearances)

Comments:
This story continues in Justice League of America #47.

Synopsis:
A triple threat strikes the heroes of the Justice League and the Justice Society. People of Earth-1 and Earth-2 are being inexplicably transported from one parallel world to the other, while their monstrous foes, Blockbuster and Solomon Grundy, are on the rampage, and, far out in space, a being from an anti-matter universe is approaching the planets.

When the two monsters are also transferred to each other's Earths, it is the team of Flash, Green Lantern, and Hawkman, together with Black Canary and Dr. Mid-Nite, that must deal with Grundy, while Dr. Fate, Wildcat, and Sandman are joined by Batman in their pursuit of Blockbuster. At the same time, the Spectre discovers that the Anti-Matter Man's approach is causing the teleportation of people from on Earth to the other, and strives to keep the two planets from coinciding to their mutual destruction.