What kind of salt?

The "salty" salt. You should put it on things! Like French fries. Because if we didn't tell you to, you'd never think to do it on your own.

Also, I'm guessing, this salt is un-iodized, given the size of the goiter on their sailor/mascot.

A bewildering array of salt brands duked it out in the pages of women's magazines in the late forties and early fifties. In addition to Sterling, you had Morton's, of course, and Ivory Salt, and Diamond Crystal Salt, and confusingly, Morton's Ivory Salt, an ad for which appears in the same magazine as an ad for Morton's, so I don't know what was going on there.

I can't remember the last time I saw an ad for salt, even Morton's. I guess once they ran Salty and his fellows out of business, Morton's didn't need to advertise any more.