To add a note to ckcowl's excellent post, when older quilts are washed in a bath tub, a sheet is often spread out in the tub before adding the water. When finished with the soaking, drain the water from the tub and use the sheet to gently roll/press the water out of the quilt...like you were making a jelly roll (the food kind, not the fabric kind). Unroll the quilt while it's still in the tub and use the sheet to lift the wet quilt out of the tub so no stress is put on the quilt itself.