Saturday, Oct. 19 Sanford Farmers’ Market, 8 am-noon, Central Park, 920 Main St. Raise the Roof yard sale, 8 am-4 pm, 329 Country Club Rd. The Sanford Gun Show, 9 am-4 pm, Calvary Baptist Church, 47 High St. Corner Cupboard, 10 am-noon, Sanford Unitarian Church, 5 Lebanon St. Party in the Park, noon-3 pm, Carpentier Park, 71 High St. Harvest Festival on The Ridge, noon-4 pm, Sky Island Homestead, 273 Hanson Ridge Rd. Author Event, “The Shattered Curling Stone” by…