I was reading this thread and it reminded my of my Grandma. She made all kinds of quilts for her family and then for other people too. She also did custom hand quilting. She always used 100% cotton white sheets for her quilt backs. She never liked a seam down the back of the quilt and I guess she didn't have access to the extra wide width fabric we have today. And BTW - those quilts are still going strong and she's been gone from us for over 30 years.