Next weekend (May 8, 9, 10), the St. Croix Valley Potters sponsor their 17th pottery tour. This Minnesota event now reaches from coast to coast, with the hosts inviting exhibitor friends from Connecticut, Maine, Massachusetts, New York, North Carolina, Pennsylvania and Virginia on the east and Oregon on the west. Being in flyover country themselves, they have not ignored the middle: there are also guest potters from Tennessee, Montana and Nebraska, and bunches from next-door Wisconsin.