I replied to your posting but it didn't show. Well anyway, at Barrywilliams.com go down to the bottom of the screen and you'll see where it says "Growing Up Brady". Click that on and you'll come to a screen where it talks all about the Growing Up Brady books. Near the bottom of that screen it talks about 'corrections'. Click on the corrections word and you'll come to a page that lists (mostly) all of the GUB mistakes in both the '92 and '99 editions.
Missing from the list page are the misquotes the books make in describing the pilot ep and goat ep. And the reason the page makes for the books making mistakes makes no sense (you'll see what I mean when you get there). Deplorable amout of mistakes in the '92 GUB book indeed!