Here are a couple at the New York Botanical Garden from few years ago. I have tried to grow them with no success. Now I just try to find them and enjoy them in the wild. In CT we have Cypripedium parviflorum, C. reginae, C. acaule, and C. arietinum. Our neighbors have seen them in the woods around us, I still have not. I am on the lookout every time we go for a walk in late spring.