Quote Originally Posted by Troacctid View Post
You can find a list of 1st party D&D 3e sourcebooks in the Consolidated Lists. Scroll to the bottom.
Thanks.

Again, I feel I have asked this whole question wrong, or in a convoluted way.

I know 1st party books are 1st party, but thanks for the reference point.

Quote Originally Posted by Psyren View Post
There are three categories for WotC "endorsement" as I see them:

1) Stuff they've published themselves
2) Stuff they licensed to another publisher
3) Everything else

The strict definition of "first-party" is the #1, while some expand it to include #1 and #2. I'm not aware of any other ways that WotC could or would "endorse" something.
Perhaps I should have used the word licensed, instead of endorsed.