Beardguy, did Cockrum design the Legion "fortress" after their clubhouse was destroyed in ADVENTURE 366? It was under construction for a long time, but I don't recall seeing it until the Cockrum SUPERBOY issues. It was "under construction" for a long time, but I think it was Cockrum who unveiled it.
I actually answered my own question, Beardguy, when I recently completed my run of Shooter ADVENTURE issues I was missing.
Like I said, the old Legion clubhouse was destroyed in ADVENTURE 365-366, and later salvaged from a junkyard by the Legion of Substitutes, who then made it their headquarters.
But the "Legion fortress" appeared the very next issue, in ADVENTURE 367.
This
link HERE has the splash page from issue 367, that first showed the exterior of the new fortress.
And several other panels showing parts of its interior rooms.
There have been some minor changes since then, such as the Legion flag outside, but it's largely the same since 1968.
