Step1
Most vintage linens will come to you with some degree of fabric wear, staining or discoloration. Normal laundering techniques are much too harsh for these linens. The fabrics are simply too fragile and you could cause further damage. The best techniques for cleaning the linens are, ironically enough, probably similar to laundering techniques that would've been used when they were new.
Step2
Begin with the "first, do no harm" mentality. Add two or three capfuls of baby shampoo to a sink or large pot of tepid water. Stir to blend and carefully add linen piece. Very gently swirl the fabric around in the water, careful not to overwork it or twist the fabric. Allow to soak several hours or overnight. Rinse in cool water and follow drying technique below.
Step3
Oxygen bleach products such as Oxi-Clean powder works nicely to remove or reduce stains and discoloration. The powder must be activated with very hot water. However, you will do not want your old fabrics put into hot water, so you should add cold water until the temperature is between tepid and cool. Place the linens in to soak for several hours or overnight. Occasionally you can gently stir the fabrics around in the solution; but remember to handle them with care and definitely do not wring the fabric.
Step4
If you prefer a more natural approach or if the oxygen bleach soak doesn't give you the results you wanted, you can add a mix of 2 cups of white vinegar and 1/4 cup of salt to a large pot of cool water. Mix it slowly and add fabrics, again allowing them to soak with only gentle stirrings for several hours. If you like, you can add a couple teaspoons of lemon juice to help in removing the stains and in fragrancing the fabric.
Step5
After your linens have soaked, do not wring them out.Gently ball them into your hands, allowing the water to run through your fingers. Slowly close and open your hands a few times to remove some of the water.Lay the linen flat on a thick clean towel and gently roll the towel up with the linen inside. This will help remove even more of the moisture. At this stage, you can hang your linens in the sun for a brief period. Do not leave them in the sun too long, as over exposure could cause discoloration. Do not hang the linens over a wire clothes line or coat hanger. Drape a towel underneath the linen to prevent any metal from rusting onto the fabric.
Step6
After your linen has dried completely, do not use starch before storing it. Starch could cause discoloration over a period of time. You can make a spray bottle of rose water and lightly mist the linen for a nice fragrance that shouldn't harm the fabric. Again, you must allow the linen to dry fully before storing.
Step7
To store, wrap or fold your linen into acid free paper. If the item is small enough, you can roll it into the paper and store it inside a paper towel roll or an empty roll from wrapping paper. The key is to make sure the fabric is fully dry before storing to avoid any chance of mildew stains, which can be next to impossible to remove on older fabrics.