I am just now reading 11/22/63 by Stephen King. Can hardly put it down.
Interspersing that with a fairly recent biography of FDR by Ted Morgan. Pretty wordy, more minutia that I'd bargained for, but still interesting. I'm on page 306 out of 774, and he only just got elected governor of New York. It's worth continuing to wade through because I'm looking forward to the World War II years. Seems there was lots of skulduggery and infighting by just about everybody on all sides.
For light summer reading, I can recommend Between, Georgia by Joshilyn Jackson. Excellent book with lots of uncannily accurate descriptions of what life in a small town in the deep South is still like. People are people, no matter where they live and what their accent. By the way, if you can find the unabridged audio version, the author narrates her own book and her accent and voice inflection for the different characters is absolutely delicious. Cracker Barrel restaurants may still have some you can rent for about $3.50 a week. What a deal!