Hi- I agree that the potatoes that you get at the farmer's market are much better than supermarket ones, because they are freshly dug. It is too late to rent a garden spot this summer, and some of the CSA's are already filled up. I love the potatoes that Nichols sells at a bunch of markets, including Green City, Oak Park, and the Evanston market. I probably buy more potatoes from him than anyone else at the Evanston market. He usually has the cheapest potatoes, and he has the widest variety. Henry Brockman also has good potatoes as does Green Acres and a few other stalls at Evanston. The particular variety of potatoes that you are looking for, I have never heard of. I used to grow potatoes when I had a larger garden than I have now, and I used to get my seed potatoes from a farm in Maine called Wood Prairie Farms. They probably only have about 20 different kinds of seed potatoes though. There is a much larger seed potato company somewhere in Idaho, but I forget the name of the place.