One bushel size cotton grain sack from Badger Brand Selected Seeds - L Teweles, Milwaukee.
This one is very stained and spotted, I haven't washed or soaked it at all. Might clean up a bit, but it's going to be spotted unless bleached beyond what the graphics can survive!
Measures 16" x 27", about the size of a standard pillow. It would make a cute pillowcase, farmhouse style.