A few weeks back I picked up two books from the post office:
Dangerous Curves by Doyald Young. Mr. Young is in my opinion the worlds greatets lettering artis, and he's got the work to prove it. He's also a fantastic typeface designer. Read my review on his typeface: Young Finesse at Typographica.
Read a review of the book by Chris Hamamoto at Typographica.
The other book is “Book of Letters From Аа to Яя” by Yuri Gordon. It's a very interesting and well designed book, and it's readable even though if you don't know a word of russian. Take a peak on a PDF excert.