I'm vaguely guessing that most people who are into typewriter collecting know about Richard Polt's forthcoming book; here is another that I'm coveting. 
It's been put together by a graphic designer (& editor of a graphic design magazine) who has been a typewriter obsessive since childhood, and, I think, looks pretty fascinating! Also really nicely laid out. I do feel like I need to get it... Not quite out yet. June. Here's the website.