Here's a look at the special stories contained within the pages of this volume....
Aliens planned on finding Superboy's home planet, so they can destroy it. So, to protect Ma and Pa Kent (and all of Earth), Superboy hypnotized himself to forget his Superboy identity for 24 hours, living as just Clark Kent (so the aliens couldn't home in on him). But, what of all the problems Superboy usually dealt with? Well, Clark's friend, Pete Ross (who had secretly found out Clark's Kryptonian identity, but Clark doesn't know Pete knows), takes action, tricking Clark to accidentally use his powers to save people (but Clark then thinks Pete is Superboy while under the influence!). The ploy worked, the aliens left, and Superboy's memories returned, none the wiser that of the help Pete performed!
Action Comics #313
Lena Thorul was trying to join the FBI, with the government agency sending her to interview Lex Luthor (unknown to them and her, her brother). With her ESP powers, she finally finds out the truth, which sends the girl into amnesia-like state, eventually wandering to Africa, where she uses her mental powers to work with animals, then returns to the USA when her memories start to come back. Lex breaks out of jail to invent a formula to remove bad memories, exposes Lena to it so she can forget he is her brother, then is returned to jail by Supergirl.
Adventure Comics #117
Superboy helps an inventor, who is also the father of Clark Kent's classmate, Gene Dekker, who has invented a VTOL aircraft (which Gene makes a model of and enters in a class contest). Superboy stops thieves who try to steal the model, with Gene then winning the contest, and Superboy builds a full-size model of the plan, that also works, delighting both the boy and his dad!
Kid Eternity #9
Kid Eternity uses his powers to temporarily revive the dead to help a dying newspaper reporter make a story against local criminal, the Beagle, so that Joe Hodges has a chance to have his name remembered for cleaning up crime in his hometown. The Kid calls on Mercury (how odd, as the god shouldn't be dead), reporter Richard Harding Davis, and even Cyrano de Bergerac to stop the Beagle (though the Beagle kills Hodges to stop the story, but the Kid revives him, allowing him to finish his last story).
Adventure Comics #332
Lightning Lad answers an emergency call from a freighter being attacked by a space creature, and response to save lives as a Legionnaire would, but the beast is able to reflect the boy's lightning powers back at him (poisoning the lighting before it goes back to Lightning Lad, infecting his arm). Lightning Lad awakes to find Dr. Lanphier saved his live, but had to amputate his arm. This causes Lightning Lad to want to hunt down the monster to kill it. Superboy, Ultra Boy (who got his powers being swallowed by a space creature), Colossal Boy, Saturn Girl, Sun Boy and Brainiac 5 all try to capture the creature, but fail, until Lightning Lad hits it with beams from the robotic arm the doctor gave him. The creature reduces in size, and Lightning Lad explains Lanphier had enlarged the creature, and gave Lightning Lad the way to defeat him (and the madness Lightning Lad had passed, though the boy hoped to have a real arm again some day....).
Brave and the Bold #54
The sidekicks of Batman, Flash and Aquaman gathered together to help the kids of Hatton Corners, who are at odds with their parents, as Mr. Twister has kidnapped all the kids, and uses his mystic stick to control the weather, but the super-kids work together to stop the menacing man, with Robin delivering the villain's end, and the children are freed to reunite with their parents.
Superboy saves Professor Tinker, an odd scientist living near Smallville, who wants to test his Titanic Tonic formula on the Boy of Steel. It doesn't work, but Superboy uses optical illusions and a giant puppet to fool the professor into thinking it did. The supposed giant-sized Superboy still tries to rescue people as the professor tries to make a cure, but ends up causing more damage due to his "enlarged size". Eventually, the professor comes up with an "antidote", and Superboy hides his giant tools, but was really using his giant self to show the professor that some of his inventions could be dangerous, and to concentrate on safer endeavors (would that other professors Superboy knows would follow his example!).