The robot says:

Underwood was the typewriter brand for much of the early 20th century. Hemingway, Stein, and most journalists of the period used machines that looked basically like this. By 1939 they had produced their five-millionth unit, which was unheard of at the time.

And:

These machines were tanks. Everything is metal, everything is mechanical. If you oil it and replace the ribbon, chances are it would still work.

Found at the local skating rink, of all places.