Memoirs are a popular form of non-fiction reading. Now there is one that has been one hundred years in the making.
What? How can that be?
Recently published is The Autobiography of Mark Twain, an unedited memoir left by the author, with the strict instructions that it not be published for a century after his death. Born Samuel Langhorne Clemens, Mark Twain died of a heart attack on April 21, 1910, at the age of 74. An excerpt from the book as presented by Newsweek reveals the content contains writings of personal anecdotes and stories of experiences in his life.
A note of interest: Mark Twain's birth coincided with the arrival of Halley's Comet in 1835. Later in his life, it was his expressed desire to "go out with Halley's Comet." His death occurred one day following the comet's return and closest approach to Earth. (See wikipedia for more details.)