I have several of Peter's books. The Art of Scale Model Rocketry has plans for a scratch-built Soyuz. I did hear that this book is out of print. Check with Peter -- he may be able to provide these to you.
I could also scan the pages and email them to you, but check with Peter -- I do not want to violate any copyright laws!
BTW -- I visited Peter one time when I had a business trip to Michigan. His models are phenomenal. I held the Saturn 1 that he scratch built (and whose picture is on the cover of the book). Truly an amazing build (the rocket, not Peter!).