vintage linens stamped for embroidery, large lot of pillowcases to embroider

Lot of SEVEN PAIRS of pillowcases or pillowcase tubing stamped for embroidery, never started, though they have no instructions or color charts. Five pair are all cotton, two pair are poly / cotton blends. None have ever been laundered, most have dust or soil or a couple of spots (some of these are nearly antique now!)