Based on a vintage typewriter I found sitting in an antique store, this font has been created directly from the key strokes of a 1942 Underwood. It's gritty, and imperfect, but that's what we love about it! 
 
I started by taking every keystroke I could get, and typing it all out onto a piece of paper. From there I scanned and vectorized every letter, number, and glyff. This is the final result - enjoy!