The typewriter was invented in the 1870s and flourished during the mid-2oth century. When I first started in journalism everything was typed, in duplicate, and then retyped on the Linotype or Monotype. Now you can adapt an old typewriter as a keyboard for your iPad.
The typewriter’s letters are uniform in width. This led to experiment with the machine as an object to produce art. Concrete poetry used the typewriter extensively, as demonstrated by Alan Riddell’s book Typewriter Art (1975, London Magazine editions). From that volume come these illustrations. The first by Richard Kostelanetz (1970), called Mullions.
Finally Alan Riddell’s Two Flags (1968).