| Unofficial Action Comics Index |
Credits:
| Story | Jerry Siegel |
| Art | Kurt Schaffenberger |
| Lettering | Joe Letterese |
| Editing | Mort Weisinger |
Feature Character(s):
- Superman (last in Superman's Pal Jimmy Olsen #51/3; next in the second story in this issue)
Supporting Character(s):
- Jimmy Olsen (last in Superman's Pal Jimmy Olsen #51/3; next in Superman Vol. 1 #144)
- Lois Lane (temorarily gains powers as "Superwoman;" and dons a costume originally seen in Superman's Girl Friend Lois Lane #21; last in Superman's Pal Jimmy Olsen #51/3; next in Superman's Girl Friend Lois Lane #24)
- Perry White (last in Superman's Pal Jimmy Olsen #51/3; next in Superman's Girl Friend Lois Lane #24/3)
Other Character(s):
- Superman Robot Z (first appearance; pretends to be Superman having lost his powers to test Lois Lane's love of the real Man of Steel)
Location(s):
Story Reprinted in:
- Superman's Girl Friend Lois Lane #104/4 (September-October 1970) [1 page omitted]
- Showcase Presents Superman #2 (2006)
Credits:
| Story | Otto Binder |
| Art | Jim Mooney |
| Editing | Mort Weisinger |
Feature Character(s):
- Supergirl (last in Superman's Pal Jimmy Olsen #51/2; next in Superman Vol. 1 #144/3)
Guest Star(s):
- Superman (last in the first story in this issue; next in World's Finest Comics #116; also in flashback, chronology ???)
Villain(s):
- Chief Crazy Antelope (first appearance; in December 1607)
- members of his tribe (first appearance; in December 1607)
Other Character(s):
- Annie Oakley (in 1885)
- Frank (first appearance; a ranch hand; in 1885)
- Becky Daggert (first appearance; a rival of Annie's; in 1885)
- Buffalo Bill (in 1885)
- George Washington (in June 1776)
- Betsy Ross (in June 1776)
- Captain John Smith (in December 1607)
- Chief Powhatan (in December 1607)
- Running Deer (in December 1607)
- Pocahontas (in December 1607)
- children and staff at Midvale Orphanage
- John Stark (first appearance; a world famous swimmer)
- Eddie Moran (first appearance; adopted by John Stark)
Location(s):
- Fortress of Solitude
- Jamestown (in December 1607)
- Midvale
- Philadelphia, PA (in June 1776)
- an island in the Pacific (in flashback)
Comment(s):
- Green kryptonite is found in the three time periods visited by Supergirl, December 1607, June 1776 and 1885. Superman explains that a few years earlier during the testing of a hydrogen bomb it interacted with a kryptonite meteor, sending pieces of kryptonite back in time.
Story Reprinted in:
- Supergirl Archives #2 ([December] 2003)
- Showcase Presents: Supergirl #1 ([November] 2007)
- Supergirl: The Silver Age Omnibus #1 ([June] 2016)
- Supergirl: The Silver Age Vol. 1 (2017)