We were at the Panhandle... museum in Canyon TX, that's about 13 miles so of Amarillo almost on the University campus. They had several exhibit of windmills, mostly for water pumping, including one made by Fairbanks-Morse. In one corner of the upper floor I believe was a couple of wind turbine generators. There was one that was specifically for 12 volt DC. It is still being built today and with TX as big and empty as it is there are quite a few places that aren't wire for 120 AC. It was a small rig with a fairly slender mast.
That said, it still may not be workable for RVing. Wish I had my camera with me but alas it was in the MoHo.