Besides the numerous blogs, forums and magazines related to our hobby, I've found that there are plenty of books related to watches. I recently acquire the following ones, basically coffee table books:
This one has the story of all the Rolex sport models, with a brief history of the brand, a description of each line (Submarines, SD, Explorer, GMT, etc) including photos and specs, and even photos of the Rolex boxes and promotional material.
This one covers a lot of brands, including its history a photos of their most famous models. I'm getting another to leave it at the office.
I really recommend both of these books. The Rolex one for a Rolex nut, of course, but the other one to any watch enthusiast.
Also, I have this one incoming:
http://www.amazon.com/Omega-Sports-W...=omega+watches
So, what do you have guys? What other books do you recommend?