Is Shakespeare Dead? (1909)

Is Shakespeare Dead? - Wikipedia summary

Is Shakespeare Dead? - Project Gutenberg HTML version (read online, swipe-able, no chapter divisions)

Twain, Mark. Is Shakespeare Dead? From My Autobiography (New York and London: Harper Brothers Publishers, 1909)
-- Archive.org version (downloadable in several formats)

Twain, Mark.  Is Shakespeare Dead? From My Autobiography (New York and London: Harper Brothers Publishers, 1909) 
-- WikiSource Version (downloadable as PDF, Mobi, ePub)

Chapter 1 - Chapters Dealing with "Claimants"

Chapter 2 - When I was a Sunday-school Scholar . . .

Chapter 3 - Poverty of Biographical Details Concerning Satan and Shakespeare 

Chapter 4 - Conjectures 

Chapter 5 - "We May Assume" 

Chapter 6 - Why His Death Was Not an Event 

Chapter 7 - Was Shakespeare Ever A Practicing Lawyer?

Chapter 8 - Shakespeare as a Lawyer 

Chapter 9 - Did Francis Bacon Write Shakespeare's Works? 

Chapter 10 - The Rest of the Equipment 

Chapter 11 - Am I Trying to Convince Anybody that Shakespeare Did Not Write Shakespeare's Works?

Chapter 12 - Irreverence - WikiSource

Chapter 13 - Isn't it Odd . . . ? - WikiSource