Issue: #275
Last valuation update: 2026-10-20
The Menace of Red-Green Kryptonite! (Superman) -- 2. Ma and Pa Kent Adopt Supergirl! (Supergirl)
First appearances: Squawky the Super-Parrot
Creators: Jerry Siegel, Curt Swan, Stan Kaye, Wayne Boring, Jim Mooney, Mort Weisinger
Characters: Superman, Lois Lane, Supergirl, Lex Luthor, Brainiac, Alura, Zor-El, Jonathan Kent, Martha Kent, Squawky the Super-Parrot