A Sea Without Fish: Life in the Ordovician Sea of the Cincinnati Region (Life of the Past) Kindle Edition* is an interesting looking book I’ve not read, but I’ve looked for. It is a case study of a particular (long) time period represented in a particular (large and rich) location, including the history of research, the relevant history of life in the region, and the fossils. Ohio is one of those states where people really love their state, and Cincinnati is one of those cities where people are all over the place with their love of city. If you are Ohio or if you are Cincinnati, you will need this book in order to document that you have the BEST FOSSILS.
The classic Starship Troopers* by Heinlein is two bucks now.
The book on which Call The Midwife is based (“The Midwife”), or more exactly, the first in the trilogy, is cheap in Kindle format. This is another book I’ve not read but I’m advised that a lot of people want it so here it is for two bucks.
Another classic: The Wind’s Twelve Quarters by Ursula Le Guin.