Chalk You Can Eat?

I've decided that for the next little while I'm just going to randomly type candy like words into the Vintage Ad Browser search tool and see what comes up.  Today I chose the word "Chewy" and I found an ad for a candy that I've never heard of, it's called "Chewy Chalk".  It sounds horrible, disgusting, and I really want to try it.

As you can guess, I found this ad on Vintage Ad Browser.

CC