Together with Sew and Save there's another great book from the forties in Britain: Make Do and Mend. This collection has reproductions from instruction leaflets. On clothes, fuel, household keeping etc.
Austerity out of need made everyone a hero in reinforcements and good care in those days. Here's on laundry:
YOUR HOUSEHOLD LINEN HAS GOT TO LAST!
Mend all tears before washing- whether they are done at home or in the laundry. If you haven't time to do a proper darn catch tears together. Laundries are working under difficulties these days and a stitch in time will be appreciated.
Never let clothes or household linens get really dirty; several light washes are less harmful than one hard one and use soft water- rain water is best.
Dry out of doors when possible - the whites in the sun and the coloureds in the shade.
And indeed, there's nothing better than laundry freshly dried outdoors......