Non-WWII Aircraft drawings?

Hi,

I apologize as I realize this probably isn't the best place to ask but I can't seem to find an answer anywhere else I've asked, so this is kind of a Hail Mary.

I am looking to build a replica of the Potez IX... well model really but that's irrelevant. I am looking for drawings but can't seem to find any on the internet. I've tried contacting Potez as they have a website (despite everything I've read about them saying they've been defunct for over 50 years) but have had no response.

I know Aircorps Library has a massive collection but they don't seem to have any I need.

I'm relegating myself to the fact that the plans may well have been lost to history but before I do, I'd like to ask whether any of you know of a similar site to Aircorps Library (or even a person who has a similarly large collection who might have plans for early Potez aircraft)?

Any help would be greatly appreciated!

Thanks!

Have you tried contacting National Air and Space Museum of France - Paris - Le Bourget

This website is worth knowing about, but they don't seem to have the Potez IX: RCL : 3views