Story: "The Secret Origin of The Golden Age Fury" (16 Pages)

Credits:

Roy and Dann Thomas (plot, script, edits)
Tom Grindberg (pencils)
Tony DeZuniga (inks)
David Cody Weiss (letters)
Carl Gafford (colors)
Robert Greenberger (coordinating edits)

Feature Character:

Fury II (Lyta Trevor; in between pages of Infinity, Inc. #35)
Fury I (Helena Kosmatos; first appearance; in flashback preceding Young All-Stars #1)

Guest Stars:

Johnny Chambers (in flashback in between More Fun Comics #71 and #72; in civilian identity only)

Villains:

Michael Kosmatos (first appearance; Helena's brother; a Nazi collaborator; dies in flashback)
Nazi soldiers and spies (first appearance of all; many die; all in flashback)

Other Characters:

Alecto
Tisipohne
Megaera (the Three Fates, as aspects of the Three Furies; first appearance of all three in these aspects; Tisipohne next in Young All-Stars #6)
Mrs. Kosmatos (first appearance; Helena and Michael's mother; dies in flashback)

Chronological Comments: In the flashback, Helena is 15 years old, though she is probably at least 16 by the time she begins her career as Fury in Young All-Stars #1.

Second Story: "Challengers of the Unknown" (22 Pages)

Credits:

Mark Evanier (plot, script)
Chuck Patton (pencils)
Bob Oksner (inks)
Carrie Spiegle (letters)
Carl Gafford (colors)
Bob Greenberger (edits)

Feature Characters:

Prof. Haley
Rocky Davis
Ace Morgan
Red Ryan (all four last in Crisis on Infinite Earths #12; all four also appear in flashback to Showcase #6; all four next in Millennium #8)
June Robbins (last in Crisis on Infinite Earths #12; next in Challengers of the Unknown Vol. 2 #1)

Villain:

Mr. Morelian (in flashback to Showcase #6; dies)

Other Characters:

Judy and Jimmy (first appearance of both; hosts of Real Incredible People)
An old immortal man (first appearance)