Take your lovely quilt to a coin-op laundromat and wash it with quilt soap (only a tiny bit will do) in a front-loader, cold water, delicate (short) cycle. You can partially dry it in a commercial dryer until just damp, then spread it out over your bed on a white sheet. The agitation of a top-loader is too brutal on antique quilts (Yes, quilts are considered "antique" after 50 years, not 100.) NEVER, EVER dry clean a quilt because it is a chemical wash and is anything but dry!