An early 1900's red and white cotton mattress tick cover in a small check plaid.  Dates from the later Edwardian - 1920's.  It is completely open on one end with no closures and is made of four width of fabric (two on each side).

Each width about 30" in width  (60" x 76-1/2" in length).  Scale of the square plaid is 1-1/8".  On one side there is a long narrow mend (see photo) about 36" in length.

It has had repeated washings so the fabric is faded to a nice used look.  

No other stains or damage that I found.