Colorado Yurt Company in montrose, colorado makes excellent tipis. I dont have any business affiliation with them.
I can personally vouch for the quality of their products, I used to own a 16' tipi that I lived in while I built my cabin.
We used to make Native american tipis do not any more.
I would be happy to share the basic pattern or I guess if others really wanted help a group make one..
Here is my favorite company to recommend because I know their work and helped them with their very first tipi..They are also out of Polson Montana and native american.
And then we all jump out and yell "surprise! we got you this tiny ad!"
It's like binging on 7 seasons of your favorite netflix permaculture show