Great names, Buttes near Gregory and of course South Dakota. I take it these are your post cards, Jonathan, where do you find them.
Yes Ray, I like the enigmatic silhouetted horse and buggy and two riders atop the ridge on this one. Gregory was a real boom town; I've never been to SD but went through ND. All the postcards, and most other things on Adalbert are from my collection. Some of the postcards I got at estate sales years ago, but I have a few secrets to keep! (: