vintage Bemis heavy cotton grain bag feed sack w/ nice dark printing, woven blue & red stripe

Mid century vintage heavy cotton feed sack, a Bemis bag marked H G Fox at the top. This measures about 44" long x 19" wide.

Fabric is heavy and stiff, seldom if ever washed. The printed emblem is the clearest I've ever seen on a Bemis bag. But there's some dark gray soil (or grease?) marks, which I haven't tried to remove. It looks mostly like surface soil, but it might take a couple of good soaks to clean it up after years in a barn.