Antique Lace, Tablecloths
They can yellow with age. Fill a sink with cool water adding 1 cup of 3% hydrogen peroxide. Bleach only worsens the problems. Use peroxide. Soak 30 minutes. If the yellow has not disappeared then add one-half cup more of peroxide and soak another 30 minutes. Rinse in one-third cup vinegar to one gallon of water. Air dry.