Who can help me build a list of authors who've worked in advertising?

DeLillo
Peter Carey
Bryce Courtney (an embarrassing popular Aus novelist)

Joe Heller

Couple of somewhat obscure Norwegians:
Gøhril Gabrielsen (went to a Norwegian publisher's "author school", published a novel through that publisher, then won that publisher's "debut of the year" award. Uh.)
Knut A Braa (writes thrillers)

Fay Weldon
Salman Rushdie

Lew Welch, the poet, who came up with the brilliant "Raid Kills Bugs Dead".

elmore leonard

William Gaddis wrote corporate PR if that counts (there are samples in that edition of Agape Agape that also has a bit of the non-fiction in)

Kenneth Fearing - poet

Peter Mayle. 15 years in advertising before "A Year in Provence".

But Chilly Billy, his masterpiece, was written while he was still in advertising. I'm talking about Peter Mayle here by the way. I'm faily confident in calling Chilly Billy his masterpiece because it was about a little man who lived in the fridge instead of a twat who went to live in France.

He switched the light on, and ski-ed in the butter and it had inspired recipes, like putting choclate chips into yoghurt. It was good.

Robert Anton Wilson

Richard Yates
Sloan Wilson

Does thi count:

Slowly but surely, Fate, which had spared my life in Dresden, now began to shape me into a fiction writer and a failure until I was a bleeding forty-seven years of age! But first I had to be a publicity hack for General Electric in Schenectady, New York.

Kurt Vonnegut - Bagombo Snuff Box

Allen Ginsberg did for a bit

Fredrick Exely - author of A Fan's Notes

JG Ballard

Augusten Burroughs