The Complete Non-Fiction of Mark Twain (annotated with commentary, Mark Twain biography, and plot summaries)

Collected here in one large, easy to navigate, book is the non-fiction works Mark Twain published over the course of his life. Included works include:

Roughing It
The Innocents Abroad
A Tramp Abroad
Following the Equator: A Journey Around the World
Editorial Wild Oats
Is Shakespeare Dead?
Life on the Mississippi
The Private History of a Campaign That Failed
Essays & Sketches of Mark Twain
Christian Science
The Curious Republic of Gondour, and Other Whimsical Sketches
Essays on Paul Bourget
In Defense of Harriet Shelley
How to Tell a Story and other Essays
The Literary Offenses of Fenimore Cooper
What Is Man? And Other Essays

Also includes a biography about the life and times of Mark Twain.