If this is a hobby or home decor accent you want to pursue, then be prepared to break the iron out of the closet, because there is some maintenance involved.  Since old linen tends to be fragile, special washing and careful handling must be used. 

Vintage linen can include such items as tablecloths, curtains, doilies, hankies, cloth calendars and classic bed linen.  Crochet, embroidered, lace or cut work, are the most sought after vintage linen fabrics.

Once you have a glimpse of a classic linen item, like a set of vintage table cloths or curtains with retro designs, the charm and nostalgia kick in making it a "must have" for your decor or collection.

The best places to find vintage and antique linen items offline are via garage sales, estate sales and flea markets.  Be prepared for competition too!  Thanks to the overwhelming popularity of online auctions, there are many who make a part time or full time living specializing and selling antique textiles.  Basically, whoever is in the right place at the right time, and has the most knowledge, becomes the winner.

Garage sales are also a good option, as the owner is usually just unloading clutter out of the attic, basement, or garage and doesn't really know the value of these classic linens.

If you're not looking to resell your linen treasures, there are a host of ways to incorporate them into your current decor scheme.  You can make curtains, baby pillows... the list is endless and limited only by your imagination and skills.