Morton Salt made salt shake-able by adding magnesium carbonate. These designs came pre-stamped on the towels, and I still wonder whose surreal dream-images they were.
Bringing them out of storage perhaps ten years ago, at first I was careful with these towels, as a new mother is very very careful with Baby #1. They proved sturdy and colorfast. I now use them regularly and think of Mom. For a Scout badge in Embroidery, a Scout leader--not Mom--taught me running stitch, cross-stitch, French knots, and huck-a-back stitch. I haven't done embroidery since, but a keyboard is a kind of sewing machine.