Mad Men Re-Runs OnDemand
I just watched "My Old Kentucky Home" and googled "book Sally read to Grandpa Gene".
I found two interesting links and the name of the book as a result.
First, an article about a Battery Park librarian who keeps a "Mad Men" book list: http://articles.nydailynews.com/2010-10-03/entertainment/27077049_1_betty-draper-don-draper-librarian
And a bookstore that has a Mad Men Book Club:
The book Sally reads in "The History of the Decline and Fall of the Roman Empire" by Edward Gibbon. (That goes well with "How the Irish Saved Civilization" by Thomas Cahill, which I am almost finished with.)
TV inspiring reading! What a concept.