Just finished reading this book, and I agree with all previous comments. Well written, full of interesting information about the difficulties and challenges these two ladies faced and endured as first ladies, and then following the end of the war. I found their experiences after the war to be the most interesting.
http://www.amazon.com/Crowns-Thorns-Glor...+and+glory
The book is well worth reading and a nice used copy is very affordable.
(I was able to get my copy in good condition for only $.01 plus s & h)