Creighton University

Here the bull responds, apparently as the frog tries to blow herself up larger, "It's no use!  You don't eat SEL."  It appears that this advertisement card, signed by the artist, is pre-stamped.  That artist's name is difficult to decipher.  I could not find that artist on the web.  "Sel" alone is salt.  I have wondered if this is not rather a product name, but that product would have been known a hundred years ago, and I cannot find reference to it on the web.