This is where I will cover all the Legion comics that don’t fit in any major continuity, including the weird crossovers and the parodies.
Superboy #117
Legion Silver Age apocrypha (Superman #49, Action Comics #388, Lois Lane #47)
World’s Finest #172
Superboy’s Legion #1
Superboy’s Legion #2
Superman & Batman: Generations III
Kingdom Come and the Legion
World’s Funnest
Tiny Titans
Legion Apocrypha cameos (Justice and Elseworlds 80 Page Giant)
Secret Hero Society #5: Field Trip Disaster
Justice League: Another Nail
Spider-Boy Team-Up #1
Star Trek/Legion of Super-Heroes #1-2
Star Trek/Legion of Super-Heroes #3
Star Trek/Legion of Super-Heroes #4
Star Trek/Legion of Super-Heroes #5
Star Trek/Legion of Super-Heroes #6
Batman ’66 Meets the Legion of Super-Heroes
Scooby-Doo! Team-Up #33 (Part 1)
Scooby-Doo! Team-Up #33 (Part 2)
Legion of Super-Heroes / Bugs Bunny
Animated continuity:
Justice League Adventures #11 (cameo) & #21