Quilts are a lot like people. They are not overnight undertakings. They seldom turn out the way they were intended. Colors change when you run short of fabric. Edges misalign where you least expect it. When Carol Nielson and her husband inherited an album quilt--half a quilt, to be precise--she had no idea of the journey on which the fragile folds of appliqu s and painstaking stitches would call her. Created in 1857 by the women of the Salt...