Uncanny Treks: Legion of Super-Heroes (1957, Comic)

Bob has been threatening this for literal years. The Silver Age Legion of Super-Heroes journey begins with the pre-history: Adventure Comics #237 and #247, Action Comics #267 and #276, Superboy #89, and Adventure #293 — the scattered early appearances where three teens from the future keep drafting Superboy. Matt gets dragged into space-superhero weirdness (it's like space X-Men, but less hated), Supergirl gets brutally rejected, and Lightning Lad commits carnival-ride sabotage. Next: sixteen straight issues from Adventure #300.