This vintage postcard features the stunning Double Spirals of Iron Mountain Hiway in South Dakota. The postcard is made of high-quality linen and has not been posted, making it a wonderful addition to any collection. The year of manufacture is 1940, adding to the postcard's historical significance. The postcard falls under the categories of Non-Topographical Postcards, Postcards, Postcards & Supplies, and Collectibles. It is a must-have for anyone interested in vintage postcards or the history of South Dakota. Don't miss out on the opportunity to own this beautiful and unique piece of history.