Claim Jumper,
I live off of Lower South Fork Road.
As you probably already know, South Fork Road is a dead end road that is about 40 miles long. The last ten miles are gravel. At the very end of the road there is a general parking area where a couple different trails will lead you into Shoshone National Forest.
Deer Creek Campground is located a couple miles before the end of South Fork Road. Dry camping only. Camping sites can handle pick-ups with campers or very short trailers. Would not recommend pop-ups. Deer Creek trail starts here and leads up to the Thorofare.
Buckstitch Canvas makes the tee pees that you refer to. They are located in Cody. They are an outdoor supplier that caters to "hardcore" outfitters and outdoorsmen(women).
The South Fork is very windy during winter and spring. The wind blows for two or three days then stops for a week or so. The wind usually brings warmer weather with it.
I am apprehensive to tell many people about this place. Do not want to spoil it.

Like I said earlier very, very, windy.....most people should probably stay away.
Pronghorn