Abigail, commenting on this old post, asks: Does anybody know if The New Yorker has an editorial style guide that one could lay one's hands upon? As an editor myself-- known as The Comma Queen by some whose work I have put a pencil to-- I would be most interested in seeing it.
I Googled "New Yorker Style Guide" and found a third-party mention of it here
But I didn't look much further. Anyone know?