This isn't really that useful, but it's fun to see where our favorite typewriters were built. I've been working on this in Google Map Engine over the past few days and currently have 69 factories marked on the map across 5 continents. I've gathered my information mainly from Will Davis's Portable Typewriter Reference and Robert Messenger's oz.Typewriter. My current goal with this map is to mark the location of every typewriter factory that was producing any decent quantity of machines during the 20th century. I'm not counting factories where typewriters were assembled from parts made in another factory, like the British-built Remingtons. It's better to view it in Google Maps Engine.
There are three fields to each point on the map--manufacturer (and model if the manufacturer is not immediately recognizable), location, and year production began there. If you notice any errors or want to add more information to the map, I can add you as an editing user if you have a Google account. (contact: schreibstang at gmail dot com)
Northernmost: Facit (Åtvitaberg, Sweden)
Southernmost: Olivetti (Johannesburg, South Africa)
Was the Brazilian-made Hermes Baby built at the Olivetti's São Paulo factory?
Full version in Google Maps Engine