I just finished reading The Paris Wife. It is written in the voice of Hadley Richardson Hemingway, by Paula McClain. Author Paula McClain did mountains of research and the result is a compelling, believable read.
If you are interested in Hemingway, you would probably enjoy it. Now, I am rereading A Moveable Feast where he pays tribute to Hadley -- the woman he failed to mention, but was by his side the whole time he wrote The Sun Also Rises.
P.S. He carried an Underwood (I think) like this one in a case everywhere he went: to bullfights, the war front and small rooms in Paris.