In the famous Hyper-Man story from Action Comics No. 265, Superman muses : "Hyper-Man dove underwater! His fortress us a plastic dome built on the sea bottom, instead of in the Arctic like mine! But, I had an undersea Fortress once, too!"
EDITOR'S NOTE! See Action Comics No. 44 for the story where Superman's fortress of solitude existed under the ocean!
That issue was from January 1942!
Case close.
Ummm, I beg to differ. Superman was not referring to the story in Action Comics #44, he was referring to the story in
Action Comics #244, September, 1958. See
here. Superman established a temporary undersea fortress in that issue. I'll bet there was a typo in that EDITOR'S NOTE, leaving out the 2.
I hate to destroy the entire premise of your thread! :wink: