“Crisis On Infinite Earths” hits the Legion differently from any other title, because the series basically continues as if Crisis never truly erased the previous history… at least for this period.
Legionnaires 3 #1
Legionnaires 3 #2
Legionnaires 3 #3
Legionnaires 3 #4
Legion of Super-Heroes v3 #19 (Part 1)
Legion of Super-Heroes v3 #19 (Part 2)
Legion of Super-Heroes v3 #20 (Part 1)
Legion of Super-Heroes v3 #20 (Part 2)
Legion of Super-Heroes v3 #21 (Part 1)
Legion of Super-Heroes v3 #21 (Part 2)
Legion of Super-Heroes v3 #22
Legion of Super-Heroes v3 #23
Legion of Super-Heroes v3 #24 (Part 1)
Legion of Super-Heroes v3 #24 (Part 2)
Legion of Super-Heroes v3 #25-26
Bonus: the Sensor Girl mystery
Booster Gold #8-9
Legion of Super-Heroes v3 #27
Legion of Super-Heroes v3 Annual #2
Legion of Super-Heroes v3 #28
Secret Origins v2 #8
Legion of Super-Heroes v3 #29
Legends #1-2
Cosmic Boy #1
Cosmic Boy #2
Cosmic Boy #3
Cosmic Boy #4
Legion of Super-Heroes v3 #30
Legion of Super-Heroes v3 #31
Legion of Super-Heroes v3 #32
Legion of Super-Heroes v3 #33
Legion of Super-Heroes v3 #34
Legion of Super-Heroes v3 #35
Legion of Super-Heroes v3 #36
Legion of Super-Heroes v3 #37
Superman v2 #8
Action Comics #591
Legion of Super-Heroes v3 #38
EPILOGUE: Superman v2 #21-22
Some of the Legion cameos in the 80s are in this period.
And finally, check out the LEGION AWARDS for this era.