I would not put this quilt in the washer or send to the dry cleaners at all. Dry cleaners use chemicals that will damage old quilts. There is a product called Orvis quilt soap (I think that is the brand name) that you can get from the quilt shops. I would soak in the bathtub with a little bit of the quilt soap and gently rub the quilt. If any of the fabrics or threads have deteriated then this will minimize damage.