Master Quilter Sylvia Bergstrom Compson treasures an antique quilt called by three names -- Birds in the Air, after its pattern; the Runaway Quilt, after the woman who sewed it; and the Elm Creek Quilt, after the place to which its maker longed to return. That quilter was Joanna, a fugitive slave who traveled by the Underground Railroad to reach safe haven in 1859 at Elm Creek Farm. Though Joanna's freedom proved short-lived -- she...