I received an email today that Princeton University Press is having a drawing from those who "like" their Facebook page or fan them on Twitter.
The books they are giving away to some lucky folks who sign up are:
Birds of Western North America: A Photographic Guide
Birds of Eastern North America: A Photographic Guide
Princeton University Press publishes a lot of books of interest to naturalists and birders, so no hardship on me to sign up at their page.
The drawing is Friday, so sign up at one or both of their social media sites.