The manuscripts include "The jumping frog. In English. In French," six chapters of "A tramp abroad," one chapter of "The gilded age," prefaces to the English editions of "The innocents abroad" and "Roughing it," and several other shorter pieces including "At the shrine of St. Wagner," "Be good, be good, a poem," "Concerning the Jews," "The death-disk" "From the London Times of 1904" "The great revolution in Pitcairn," "How the chimney-sweep got the ear of the emperor," "The invallid's story," "The paradise of the rheumatics," "The regular toast," and "A true story," together with Susy Clemens's "Biography of Mark Twain" with his footnotes, proof sheets of his "Autobiography," a family journal from Australia, India, etc. [in a dummy book "Heroines of History"], and John Galsworthy's "Tribute" to Twain written in the greeting book of the Mark Twain Society.
Family correspondence consists of cheerful letters to his wife Olivia Clemens and daughters Susy, Clara and Jean about his travels, lecture audiences, and acquaintances. There are also letters to his mother Jane L. Clemens, his brother Orion and family, his nephew Sam Moffett and his sister-in-law and her husband Susan Langdon and Theodore Crane.
Business correspondence concerns Twain's emergence from the bankruptcy of Charles L. Webster Publishing Co. in which he was the majority stockholder. There are also book contracts, papers concerning his ill fated Paige typesetter investment, and papers concerning Edward H. House's unsuccessful suit against him over dramatization rights to "The prince and the pauper."
There is professional correspondence with authors, editors, and publishers in the United States and England including Hjalmar Boyesen, George Washington Cable, William H. Claggett, John Galsworthy (to Cyril Clemens), William Dean Howells, Albert Bigelow Paine, George Bernard Shaw, and Charles Dudley Warner.
Other correspondents include fellow journalists and miners in the U.S. West in the 1860s, voyagers on "The Quaker City," friends in Hartford, Ct., Hannibal, Mo., and Keokuk, Ia., members of the Players Club and other societies to which he belonged, friends from his travels, and his reading public.
The collection also contains Clemens family real estate notebooks, n.d.; photographs of Twain, his family and friends; a portrait by Mrs. Edward A. Ward; a bronze bust by Albert Weinert, 1899; drawings, medallions and other art including illustrations of Twain's works.
- Billings, Josh, -- 1818-1885 -- Photographs.
- Cable, George Washington, -- 1844-1925 -- Photographs.
- Clemens, Clara -- Photographs.
- Clemens, Jane Lampton, -- 1880-1909 -- Photographs.
- Clemens, Olivia Langdon, -- 1845-1904 -- Photographs.
- Clemens, Susy, -- 1872-1896 -- Photographs.
- Frazer, Laura Hawkins -- Photographs.
- Freeman, Zoheth S. -- Photographs.
- Gabrilowitsch, Ossip, -- 1878-1936 -- Photographs.
- Grant, Ulysses S. -- (Ulysses Simpson), -- 1822-1885.
- Locke, David Ross, -- 1833-1888 -- Photographs.
- Paine, Albert Bigelow, -- 1861-1937 -- Photographs.
- Pond, James B. -- (James Burton), -- 1838-1903 -- Photographs.
- Quintard, Edward, -- 1867-1936 -- Photographs.
- Twain, Mark, -- 1835-1910 -- Adaptations.
- Twain, Mark, -- 1835-1910 -- Illustrations.
- Twain, Mark, -- 1835-1910 -- Travel.
- Twain, Mark, -- 1835-1910 -- Photographs.
- Twain, Mark, -- 1835-1910 -- Portraits.
- Twain, Mark, -- 1835-1910 -- Statues.
- Twain, Mark, -- 1835-1910. -- Prince and the pauper.
- Charles L. Webster and Company.
- Harper & Brothers.
- Quaker City (Steam ship)
- Players (Club)
- Authors and publishers.
- Authors and readers.
- Authors -- Travel.
- Authors, American -- Biography.
- Book editors.
- Booksellers and bookselling -- Colportage, subscription trade, etc.
- Business failures.
- Humorists, American.
- Illustration of books -- United States.
- Journalists -- United States.
- Lectures and lecturing.
- Ocean travel.
- Printing industry -- United States.
- Publishers and publishing.
- Silver mines and mining -- Nevada.
- Theater -- United States.
- Voyages and travels.
- Elmira (N.Y.)
- Hannibal (Mo.)
- Hartford (Conn.)
- United States -- Civilization -- 19th century.
- West (U.S.)