I think we're 6b with the recent change to the USDA map. I know one was Yukon Gold, I think one was Adirondack Blue, and the last was a russet, but I forget what varieties they were for sure.

I bought from a local hardware store that buys in 50 lb bags of seed potato and breaks them down into 3, 5 and 10lb paper sacks. It's like time traveling when you go in there.