The Southeastern Quilt and Textile Museum (SQTM) in Carrollton is hosting “Nineteenth-Century Blues: A Quilt Study,” a biennial traveling exhibition from the American Quilt Study Group (AQSG), Aug. 8 through Sept. 15. The show pairs contemporary quilts from across the country with nine historic pieces from SQTM’s collection. Traveling study quilts hang alongside SQTM’s own historic pieces in “Nineteenth-Century Blues: A Quilt Study,” pairing fre…