It’s the end of an era, a half-century of fine art and folk art, painting and sculpture, collage and furniture, any number of artistic endeavors. Sally Viskochil has decided it’s time to close the doors at Tamarack Gallery in Omena, which she and her late husband David opened in 1976 after moving from its original location outside Cedar. Tamarack will close permanently on Oct. 31. The gallery plans to host a closing party on Saturday, Oct. 28 from 10 am until 5 pm.