A few months ago I posted about Patterns. Patterns is a great example of smart self promotion by R.BIRD, a package design agency out of New York.
They recently stepped it up a notch by turning their free Patterns reports into a book. You can now buy a 220-page full-color paperback or a PDF on their site. You can also purchase individual reports too.
I just got my copy and the book is really beautiful. Well done, R.BIRD.