The Marvel Comics' No-Prize. A mythic relic of original Marvel Fandom!
The elusive handwritten and signed Marvel Postcard from "Stan and the gang"...though most likely signed by Fabulous Flo Steinberg—not that there's anything wrong with that!—from November 1965.
Cool moments from 1960s Marvel to be sure.
But are they National Periodical Publications Inc.'s mid-1960s, 8.5" x 11" double-sided, single-spaced, 9-point type encyclopedic trifold letter to "Dear DC Reader" (of which I believe there might have been several versions, periodically updated) cool?
I don't think so!