In 1867 Mark wrote his first book The Celebrated Jumping Frog and Other Sketches
In 1869 Sam wrote The Innocents Abroad
In 1872 he published Roughing It
In 1873 he wrote the new book The Gilded Age (With C.D. Warner)
In 1876 Twain wrote The Adventures of Tom Sawyer
In 1880 Mark wrote A Tramp Abroad
In 1882 The Prince and the Pauper and also The Stolen White Elephant
In 1883 Sam wrote The Life on the Mississippi
In 1885 Clemens wrote The Adventures of Huckleberry Finn
In 1889 Dr. Twain wrote A Connecticut Yankee in king Arthur's Court
In 1892 Mr. Clemens wrote The American Claimant
In 1893 The $100,000 Bank Note
In 1894 Mark published Tom Sawyer Abroad and The Tragedy of Pudd'nhead Wilson and the Comedy of Those Extraordinary Twins
In 1896 Twain published Personal Recollections of Joan of Arc and Tom Sawyer Abroad, Tom Sawyer Detective, and Other Stories.
In 1897 he wrote How to Tell a Story and Other Essays and Following the Equator.
In 1900 Clemens wrote The man that Corrupted Haddleyburg and Other Stories
In 1916, although Mark had already passed away, they found one of his stories called The Mysterious Stranger and published it.
In 1938, they published another book called Letters From the Earth.
Information from MARK T-W-A-I-N by David Collins