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Yeah there is certainly some truth to that, the original logo design came from an open source contributor who mentioned some ideas coming from the movie posters: https://github.com/gatsbyjs/gatsby/issues/408#issuecomment-2...

Maybe! The font on the magazine appears to be Broadway Engraved[1], but similar fonts were extremely common in the book's time period, making any of them an obvious choice. The logo looks a lot more like the C and O in Secret Agent NF[2]. Could be inspiration, or could easily be coincidence.

[1] http://www.identifont.com/similar?2AG [2] http://www.identifont.com/similar?9TR

They may well have done that, but as a very nit-picky aside, that font has a pretty general art deco vibe, so it's not necessarily unique to that GQ cover.