"Supergirl: "The Supergirl from Krypton!"": This story is reprinted from Action Comics #252.
Appearing in Supergirl: "The Supergirl from Krypton!"
- Zor-El (Flashback only) (First appearance)
- Allura In-Ze (Flashback only) (First appearance)
- Miss Hart (First appearance)(headmistress at orphanage)
- Mister Dixon (First appearance) (headmaster at the orphanage)
- Krypton (Flashback only)
- Argo City (First appearance) (Flashback only)
- Anti-Kryptonite (First appearance; unnamed)(Flashback only)
- Space Telescope
Synopsis for Supergirl: "The Supergirl from Krypton!"
This story is reprinted from Action Comics #252.
Clark Kent is working alone in his office one afternoon when he catches something out of the corner of his eye. Using his x-ray vision, he witnesses a purple colored rocket ship crash landing several miles away. Switching into his Superman costume, he flies off to investigate. When he arrives, he is shocked to discover that the rocket's sole occupant is another Kryptonian – a young blonde-haired girl named Kara.
Kara tells Superman that her home town, Argo City was blasted free of Krypton's destruction in a bubble of compressed air. The island soared through space as free-floating planetoid. Her father was a scientist named Zor-El who created a force field bubble around the city to contain the atmosphere and also coated the ground with sheets of lead to prevent traces of Kryptonite in the ground from poisoning the populace. Years later, when Kara was a teenager, a meteor shower in space penetrated the air bubble and tore through the lead shielding. In order to save his daughter from Kryptonite poisoning, Zor-El designed a space ship to rocket her away from the city. His wife learned of the existence of Earth, and its Kryptonian hero, Superman. They chose to send Kara to Earth so that she can be with one of her own.
Superman realizes that Kara's father, Zor-El, was the brother of his own father, making the two of them cousins. He is elated to find another Kryptonian but remorseful for the fact that like he, Kara is now an orphan.
Superman cannot take charge of Kara because he needs to protect his own secret identity. However, he flies her to the nearby town of Midvale and registers her at the Midvale Orphanage. He provides her with a brown pig-tailed wig, and Kara chooses the name Linda Lee as her new Earth name. Superman promises to train Kara in her new super-powers, stating that this Supergirl will become his new secret weapon against fighting crime.
After Superman leaves, Kara settles in at the orphanage. She begins testing her new powers by cleaning her room with super-breath and fixing a bent iron bed leg with super-strength. She cannot wait for her first official adventure as Supergirl.
Appearing in Supergirl: "The Cave-Girl of Steel"
- Superman (Cameo)
- Sea Serpent
Synopsis for Supergirl: "The Cave-Girl of Steel"
This story is reprinted from Action Comics #259.
After secretly saving one of the orphanage's babies from suffocating in a plastic bag, Supergirl decides to look in on her cousin Superman to see what he's doing with her x-ray vision. Deciding that she wants to participate in heroics like her cousin, she decides she can do it without risk of exposing the secret that she exists: By traveling back in time and committing super-deeds there. Changing into Supergirl, she travels back to prehistoric times where she uses her super powers to help cave men fight off dinosaurs and other threats.
She saves a cave-baby from a pterodactyl, tames a brontosaurus and uses it to carry flood victims to safety, and finally protects them from a fire breathing sea serpent. This last feat allows the cave people to discover fire. After she returns to her own time and resumes her identity of Linda Lee. Later, taking a trip to the history museum, Linda is impressed to find a cave painting depicting her battle with the sea serpent that is on display at the museum.
Appearing in Supergirl: "Supergirl's First Romance"
Synopsis for Supergirl: "Supergirl's First Romance"
This story is reprinted from Action Comics #269.
When saving a girl from an injury on the swings, Supergirl has to act fast that she is witnessed doing this super feat by Freddy Blake. She manages to deflect Blake's probes, however she doesn't end his suspicion. Later when Miss Hart takes the children on a boat ride, they get caught in a nasty storm, seeing this with her x-ray vision, Linda changes into Supergirl and secretly saves them from danger.
While underwater, Supergirl is contacted telepathically by Lori Lemaris from Atlantis. Answering the summons, she is asked by the Atlantians to help ancient Atlantian weapons that have run amok. Shown to the site by Jerro, a young merman, Supergirl is instantly smitten by the young boy. After smashing the weapons, Supergirl is given a tour of the many sites in Atlantis by Jerro. When she wonders what it would be like to kiss him, she realizes that all Atlanteans are telepathic and realizes that he must have read her thoughts. Embarrassed, she leaves to return to the mainland. There she is once more scrutinized by Freddy who notices that her hair is wet. Distracting him she uses her super speed to dry her hair, she once more pulls the wool over his eyes. That night all she can think about is Jerro and wonders when she will see the mer-boy in the future.
Appearing in Supergirl: "Supergirl's Super-Pet"
Synopsis for Supergirl: "Supergirl's Super-Pet"
This story is reprinted from Action Comics #261.
While witnessing a meteor shower in Midvale, Linda Lee decides she wants to try and find some of it's fragments for study. Changing into Supergirl she goes to the site where the meteor has crashed and finds that a portion of it is Kryptonite. Using a lead tin, she manages to collect it for her to study and try to find a cure for her and her cousin's weakness to Kryptonite. After numerous tests (which would ultimately create what will be referred to as X-Kryptonite), Linda finds the whole experiment a failure and tosses the Kryptonite deep into the woods so it cannot harm her.
The next day she saves a stray cat from a dog, naming it Streaky, she takes it back to the orphanage where she is allowed to keep it as a pet. While playing, Streaky comes across the X-Kryptonite and it's radiations give Streaky super-powers. Taking a cape from a Superman doll, Streak -- calling himself the Super-Cat -- goes into action, knocking over a milk truck for other strays to get free milk. Streaky then gets back at the dog that terrorized him earlier. Hearing his super-sonic meow, Linda decides to go and check things out as Supergirl.
She is shocked to find that Streaky has super-powers just like hers, and decides to preoccupy the cat by having it play with steel cables as though it were yarn. After some play, Streaky's powers begin to fade, and Supergirl is forced to return the cat to Earth on her own. With the cat seemingly back to normal, Supergirl wonders just how Streaky manage to get his powers in the first place.
Appearing in Supergirl: "Supergirl's Fortress of Solitude"
- Professor Damon Brant (Single appearance)
Synopsis for Supergirl: "Supergirl's Fortress of Solitude"
This story is reprinted from Action Comics #271.
After rescuing Streaky from an attacking dog, Linda Lee happens upon another television report about Superman's adventures. Thinking about someday saving the world just like her cousin, Supergirl decides that she too should build her own Fortress of Solitude. Getting a bunch of building material she secretly builds her own fortress in the middle of a desert and begins loading it up with souvenirs and private attractions about her exploits as Supergirl, including statues that reveal her secret identity.
When Streaky once more exposes himself to the X-Kryptonite and gains super-powers he tracks Supergirl down to her fortress, prompting her to build a room specially for Streaky until his powers wear off. As she returns Streaky to Midvale, a group of archeologists accidentally uncover Supergirl's fortress. Professor Brant convinces his wife and colleague that since Supergirl's identity is secret for now, they should erase their memories with a post-hypnotic suggestion. However, Brant only does so to his college and he and his wife conspire on how they can blackmail Supergirl into doing their bidding.
They go to Midvale Orphanage and arrange to adopt Linda Lee, and at first being to spoil us. At first, Professor Brant leads Linda to believe that they need more money for new explorations, prompting her to go out in secret as Supergirl and find them diamonds and other items of value to fund expeditions. However, the Brant's soon reveal that they know Supergirl's secret identity and demand that she continue to collect wealthy items for them. Eventually the greedy couple has Supergirl steal a statue from the people of Gaz, and well as other treasures including the Taj Mahal. However, things are foiled for the Brant's when Streaky once more gains super-powers and goes looking for Supergirl. Exposing the Brant's to his own x-ray vision wipes out their memories of Supergirl's identity. Supergirl then secretly returns all the stolen property, and orchestrates things so that the Brant's return Supergirl to the orphanage.
Realizing the potential dangers of have her own Fortress of Solitude at the present time, she and Superman work together to destroy it completely before Supergirl returns to the orphanage in her civilian identity, wondering if she'll ever build a Fortress again.
Appearing in Supergirl: "The Three Super-Heroes"
- Legion of Super-Heroes
- 30th Century
Synopsis for Supergirl: "The Three Super-Heroes"
This story is reprinted from Action Comics #267.
After watching a demonstration put on by her cousin Superman in her civilian guise of Linda Lee, Supergirl is visited by three teens who can exhibit extraordinary powers and happen to know Supergirl's secret identity. Supergirl decides to finally investigate when these teens manage to activate her Linda Lee robot.
Upon confronting these teens, they reveal themselves to be Cosmic Boy, Lightning Lad and Saturn Girl, members of the Legion of Super-Heroes from the 30th Century. When Supergirl recalls her cousin telling her of his induction into the Legion when he was Superboy, the Legion members tell her that they are the children of the original Legion and that they want her to join their ranks.
Traveling to the 30th Century, Supergirl meets other new members of the Legion: Chameleon Boy who can change shapes, Invisible Kid who can turn invisible, and Colossal Boy who can grow to titanic heights. Her initiation into the group would require her to perform a super-feat for them. When it's learned that there is too much air traffic on the planet Earth, Supergirl digs a tunnel through the planet wide enough for air ships to fly through in order to lighten the load. However, when she emerges and returns to the Legion, she is shocked that she is a full grown woman and therefor is no qualified to be a member of the Legion who does not admit anyone over the age of 18.
Dismayed, the now Superwoman uses her X-Ray vision to find the cause, and finds that there was a chunk of Red Kryptonite that caused the change in her body. The Legion regretfully tells Superwoman that she will not be able to apply for membership for another year. Returning to her own time, and after the effects of the Kryptonite have worn off, Supergirl (in her civilian guise of Linda Lee) wonders if she'll be invited into the Legion again.
Appearing in Supergirl: "Superboy Meets Supergirl"
- Kryptonians (Flashback only)
- Tommy Dale
- Krypton (Flashback only)
- Argo City (Flashback only)
- Green Kryptonite (Flashback only)
- Superboy Robots (Mentioned only)
- Super-Space Telescope (Mentioned only)
- Kryptonian Rocket (Flashback only)
- Merman Craft
- Spaceships (Destroyed)
Synopsis for Supergirl: "Superboy Meets Supergirl"
This story is reprinted from Superboy #80.
Superman and Supergirl are out enjoying the winter weather by building a giant snowman, as they are doing so, Superman comments about how he never had a super-powered friend to play with when he was a young man living in Smallville. Taking this to heart, Supergirl travels through the time barrier into the past and meets Superboy in Smallville. After introducing herself to him, and explaining her origins the two hit it off and enjoy activities together.
Using the universe as their playground, the two super youths play "super" versions of games that normal humans would find impossible, like playing darts using each others bodies as targets, playing leap frog over meteors. When they spot an alien space ships about to attack the Earth with death rays at the Earth. The two heroes use their super-powers to destroy the alien ships.
After saving the day, Supergirl realizes that Superboy's foreknowledge of her arrival in the future might cause this fact slip out and ruin his future selves intent of having Supergirl as a secret weapon. Agreeing that this may cause a problem, Superboy flies to the planet Albo which has plants that cause people to lose their recent memories. Supergirl returns to her own time, and Superboy returns home wondering what it would be like to have a super-playmate, with no memory that he actually had one for a whole week.
Appearing in Supergirl: "The Super-Steed of Steel"
- Helen of Troy (Mentioned only)
- Firebrand (On a TV or computer screen)
- Krypto (In dream sequence only)
- Mace Greede
- Pop Hadley (Mentioned only)
- Superman (Mentioned only)
- Pacific Ocean (World War II, 1942) (In dream sequence only)
- Time Barrier (In dream sequence only)
- Ray Guns (In dream sequence only)
- Trojan Horse (Mentioned only)
- 1961 Chevy Impala SS
- Japanese "Kamikaze" Suicide Plane (In dream sequence only)
- Space Craft (In dream sequence only)
- Submarine (In dream sequence only)
Synopsis for Supergirl: "The Super-Steed of Steel"
This story is reprinted from Action Comics #292.
Supergirl has several dreams about Comet the Super-Horse, a white super-horse who performs amazing feats. Later, she and her parents go to a "Supergirl Dude Ranch", where they meet with the real Comet, a white horse whom only she (as Linda Danvers) can claim. Comet demonstrates that he really has super-powers and, by taking her to the giant image of Supergirl outside the ranch, indicates to Linda that he knows her secret identity. She promises to make him a red super-cape to wear later on, and wonders where Comet came from.
- This issue's sixth story, "The Three Super-Heroes", has been abridged, recolored, and rewritten so that the Legion of Super-Heroes no longer claim to be the children of the Legion who knew Superboy.
- No trivia.