This section is from the book "The Complete Home", by Clara E. Laughlin. Also available from Amazon: The Complete Home.
Curtains and draperies should be shaken and brushed free from all the dust possible, before washing. Lace curtains, and especially those which are very fine or much worn, need dainty and careful handling. Soak for an hour or two in warm water containing a little borax, then squeeze out the water and drop into a boiler half filled with cold water to which have been added one half bar of soap, shaved thin, two tablespoonfuls of ammonia, and one of turpentine. Bring to a boil and let stand at the boiling point, without boiling, for half an hour, stirring occasionally with the clothes stick, rinse thoroughly, starch well with thick boiled starch, and stretch on frames to dry. If frames are not available, pin to a carpet which has been smoothly spread with a clean sheet. When a pure white is desired, add a little bluing to the starch water. Water tinted with coffee will produce an ecru effect, while tea will give a more decided hue. Muslin curtains are laundered like any other fine white goods.
 
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