Adventure Comics #390

Adventure Comics #390 (On Sale: January 13, 1970) has a Supergirl cover by Curt Swan and Murphy Anderson featuring an All-Romance Issue!

This issue begins with Supergirl in"When Supergirl Played Cupid" from Action Comics #289 by Jerry Siegel and Jim Mooney. Supergirl embarks on a campaign to see Superman happily married. Traveling into the past, she unsuccessfully attempts to interest him in Helen of Troy. Her similar effort in the future era of the Legion of Super-Heroes also fails, when she learns that Saturn Woman, the adult Saturn Girl, is already married to Lightning Man, the adult Lightning Lad.

Finally, she locates Superman’s ideal mate on a distant world, where Luma Lynai, a superwoman who resembles Supergirl herself as an adult, falls in love with the Man of Steel. When it turns out that Luma Lynai cannot survive on Earth, however, the couple are focused to part, and Supergirl learns not to interfere in her cousin’s love life.

Next is Supergirl in "The Secret Identity of Super-Horse" from Action Comics #301 by Leo Dorfman and Jim Mooney. Supergirl and Comet visit the planet Zerox to help Superman’s friend Prince Endor. Comet allows Endor to ride him in order to complete a ceremony which allows the prince to retain his rule. In appreciation for Comet’s help, Endor places a spell on the horse, which allows him to temporarily become human, when a comet passes.

When they return to Earth, Supergirl leaves Comet with some other horses. A comet passes by, transforming Super-Horse into a man. He assumes the identity of Bronco Bill, a rodeo star. He later meets Supergirl at the rodeo, but decides to keep his identity secret from her. Eventually the effect of the spell wears off, and Comet is returned to his horse form.

This if followed by "Supergirl's Cowboy Hero" from Action Comics #311 and also created by Leo Dorfman and Jim Mooney. Comet travels back in time to visit his former love Circe in hopes that she may find a way to make him human. Circe creates a potion that will take effect shortly after Comet returns to the present. However, when Comet arrives back in his own time, he has amnesia.

A masked crook called the Hooded Demon finds Comet and uses him to commit a series of robberies. Comet's powers then begin to wear off and both he and the bandit are wounded. Comet's transformation then begins. He becomes human again.

A posse searching for the masked crook believe Comet is the bandit. Comet eludes them and manages to spend some time with Linda Danvers. She thinks he is Bronco Bill, whom she once met as Supergirl. The posse eventually catches up to Comet forcing him to flee.

Supergirl pursues him too, so Comet wishes Circe to reverse the effects of the potion. She complies, and Comet changes back to a horse. The real Hooded Demon is caught clearing Bronco Bill, and Supergirl still does not know that he was really Comet.

Next is "The Great Supergirl Mirage" from Action Comics #256 and created by Otto Binder and Jim Mooney. While secretly performing good deeds as Supergirl, a boy from the Midvale Orphanage, Dick Wilson, takes a picture of her. He suspects Linda Lee is Supergirl, when he sees her turn in a report that she finished at super-speed. Linda makes an excuse that she had a copy of the finished report elsewhere, but Dick is not convinced.

While looking for minerals for Geology class, Dick tricks Linda by throwing a dummy of himself off a cliff. Linda’s X-ray vision ignites chemicals which Dick coated the dummy with. Linda causes lightning to strike the dummy to cover her mistake. Dick is still convinced she is a Supergirl.

Dick tries to trick Linda again with heavy dumbbells. Linda falls for the trick, but her powers allow her to once again cover her mistake and protect her identity. She is distressed over the situation when a Supergirl robot arrives to perform amazing feats at a show. Dick is now convinced that he saw the Supergirl robot sent by Superman, and that Supergirl does not exist.

We end with "Supergirl's Wedding Day" from Action Comics #307 created by Leo Dorfman and Jim Mooney. Tor-An, a criminal from the Phantom Zone, escapes. He takes the identity of a teacher at Midvale High School in order to get close to Supergirl. He reveals his powers to her, but claims to be a survivor of Argo City.

Supergirl falls in love with the criminal and plans to marry him. Supergirl’s telepathic friends Jerro and Comet warn her about Tor-An’s evil intentions, but she does not believe them. When Superman returns from a space mission, he appears to give his approval. However, Tor-An has replaced the Man of Steel with a robot.

The wedding takes place at the Fortress of Solitude. Immediately after the ceremony, Tor-An reveals his true background. Supergirl then reveals herself to be Saturn Girl in disguise, therefore the marriage was illegal. Saturn Girl had been contacted by Jerro, Comet, and Lori Lemaris. Tor-An is taken to the future for imprisonment until he can be returned to the Phantom Zone.

Edited most likely by E. Nelson Bridwell.