ME's Funnyman in 1948 was bylined Jerry Siegel and Joe Shuster; I myself can't see any Shuster work there. If he did, for instance, any layouts, they're overwhelmed by finishes that look like full art by the likes of John Sikela.
The GCD inexplicably attributes "You Can't Escape" in Atlas's
Adventures into Terror
6 (Oct/51) to Joe Shuster when it isn't by him. His signed work at
Charlton in the mid-Fifties is ghosted by Bill
Molno. Attributions to Shuster on crime at St. John in the same
are back-formations from the Charlton work; those St.
John stories are drawn by
Shuster did have work at St. John, though.
Their Approved Comics
reprinted Ziff-Davis features, but issue 2 (March/54), Invisible
is evidently inventory. The Who's Who puts Jerry Siegel's Invisible Boy
scripting at Z-D, where he was an editor, and attributes the feature at
St. John to Paul S. Newman. As far as I can tell, the scripter on the book is indeed Siegel.
I have no idea who drew the issue's three other stories, although the
feels familiar. But the art on the first one, "The Secret Formula," is
Joe Shuster; his style hasn't morphed into something dramatically
different from the early Superboy stories. This, not those Charlton
stories, would be his final work in comic books, and unlike the Superboy feature, teamed him one last time with Jerry Siegel.