WOW!I have only 20+ 3-sheets, mostly 1960s.
I only have one 3 sheet. The Raven (1935) - 1948 Realart re-releaseI dont think any 3sh from the original release have ever appeared, so this seems the next best thing. And as far as I can find, this RR is an only known copy to have surfaced.
The greatest 3S of all time:
here's another example...