Yes, you jumped in with both feet, but head first!
Ford is just the chassis builder. If you can find a chassis model, get what ever books you can find at what ever price you have to pay.
Brougham is most likely a builders model name. There was a Brougham manufacturer once, but it was before 1980 iirc. See if you can find a mention of a builder there some where.
The next thing you should do is start getting friendly with the Tin Can Tourist people. They are the biggest group of vintage and antique RV people that have any real organization.
I wish you luck.