Read an excellent book last week, "True Sisters" by Sandra Dallas. I've been a fan of Dallas' books for many years, but this book tops the list. Her books are historical fiction, but you can tell she does a tremendous amount of research on the topics.
"True Sisters" is about the last Mormon handcart emigrant journey across the plains. The story is horrific, because so much of it is true. The characters in the book are fiction of course, but they are based in reality.