Navajo-Churro are a rare breed that is hard to find, at least in the eastern part of the country. You might try the ALBC ( American Livestock Breeds Conservancy) for a list of breeders. There are a couple in MA and VT. Hope this helps you in your quest!
I am lucky enough to own 7 Navajo Churro. They are amazing animals, they're perfect for this area, I'm in southern Utah. Before I got my sheep I was able to go to a couple really great farms, dedicated to NC sheep. These were both awesome experiences. There is a really great group on yahoogroups with some super knowledgeable people. Once you meet and talk to people you may be surprised by what you can find in your area. Some of my sheep I got from a ranch that is still working on bringing this breed back, and distributing them with Navajo tribes. I got two sheep from another guy who was changing his focus to cattle and had just a couple of sheep left, they were in his back yard in Salt Lake City.
I have 4 ewes, a ram, and a little wether pet. We just welcomed our first lamb, a little ewe 3 weeks ago. We have 2 more ewes ready to lamb anytime.
Join the group, if possible come out west and see some ranches, it's worth it just to see these sheep out in the desert among the sage and rabbit brush.
Don't know if you're still interested in Navajo Churro sheep, but I recently came across your post and I have a small herd in upstate NY. I have two pregnant ewes as do my neighbors (we share a ram). They should be lambing any day now - not sure what we'll get, but I am interested in selling some of the lambs.
I only have four sheep myself and they are all super friendly and fun - like gettting scratched behind the ears etc. If this is what you are interested in let me know and I'll keep you posted about how the lambing goes.