I was not having any success looking for lampshades until I called the Wayfair personal shopper.  Brigham was extremely helpful and was able to find me just what I needed.  The shades came quickly and were what I needed, and the quality was excellent.  Considering I bought the lamps in 1966, the shades cost much more than I paid for the lamps but I was expecting that as it was the second replacement.  I was glad to pay the price for the service and quality.