Here's a piece in The Atlantic about pre-ASCII (digital character-based) art, of course featuring some typewriter art and a number of samples. I'm taken by the sample of the concrete/art piece Carnival, one panel of which is shown here.
Of course, Typospherians know that typewriter art is still alive and well, based on the articles that we've posted here. Why not celebrate ITAM* with a little type-art of your own?
* International Typewriter Appreciation Month, of course, all February long!