Okay, it's West End and not FFG, but it's still a facinating look at the behind the scenes of putting together a RPG for a popular property:

He caps it off with:

Anyway, remember context. That was a guide for freelancers. It's not that those things can't happen. Editors didn't want it in EVERY pitch.

Okay, there's some good advice in there for GMs too. . . .

Okay, so where is this book, and how can we get a copy of it?

You'd probably have to find a WEG freelancer who still had one. That or hit ebay and find one for 800 bucks.

Here's a couple more:

While they didnt post the whole thing, IO9 got their hands on a copy of the full document: http://io9.gizmodo.com/the-secrets-of-writing-good-star-wars-according-to-wes-1765739282