The Seneca County Museum is inviting area residents and Holiday Happenings shoppers to visit 28 Clay St. 1-4 p.m. Friday and Saturday. Museum activities are to focus on the 1884 Seneca County courthouse. Seneca County Historical Society members have been preparing an area of the museum to display the items discovered in the courthouse cornerstone. This display is finished, but the work will pause long enough for visitors to get a sneak preview of what has been done so far. After this weekend, the courthouse cornerstone display will be closed for viewing until its completion.