Part one: Home (chapter 1-23) Part two: Philadelphia (chapter 24-50) Part three: Paris (chapter 51-68)

The book Beaches, that eventually became a Barbra Streisand movie, was written as correspondence between the characters.

The 1980’s series of "choose your own adventure" books fits number six. I have some generic ones as well as a few that pair the reader up with Indiana Jones.

I also appreciated Jasper Fford's series of Thursday Next and Nursery Crimes. Thursday Next is a detective who lives in the real world and solves crimes in the world of books. In the first book, a notorious fictional criminal is hiding out inside of the novel Jane Eyre. Nursery Crimes is another detective series peopled with characters from nursery rhymes.