These came up in a search on "paleo" in publication date sort. These
books are free only today.
30 Paleo Diet Recipes Breakfast, Dinner, Snacks, Desserts by Riley Monroe
http://www.amazon.com/dp/B0096PPHQC
The Paleo Diet Decoded: Lose Weight Quickly The Right Way by Trent Andrews
http://www.amazon.com/dp/B0099EEVH6
And yesterday's book is again free today.