Dexter Historical Society The Dexter Historical Society will participate in The Wild West Weekend activities by offering expanded open hours on Friday and Saturday at the Grist Mill Museum. The Carr School will also be open that day. New items at the Abbott Museum gift shop include the two new Fernwood Blocks; of the Town Hall and the Park Theatre, and the catalog for the exhibit of Bert Call photographs, following Thoreau’s three trips to Maine, that was presented in Concord, MA recently. These items will also be available at a sale table in front of the Grist Mill.