Sam Clemens' cave signature (from the Mark Twain Cave website).
It is not too difficult to find items signed by Mark Twain. There are lots of signed books, letters, photographs, postcards, documents, even checks out there. However, a first for Twain autographs was recently discovered – a signed cave.
Of course, “Mark Twain” was just a pen name. His actual name, and the one he grew up with exclusively, was Samuel Clemens. Clemens was born in Florida, Missouri, in 1835. When he was four, his family moved to Hannibal, Missouri, along the Mississippi River. He remained there until he reached the age of 18. He was already working in a print shop by the age of 12, later becoming a typesetter at the local newspaper which was owned by his older brother, Orion. At the age of 18, he went off to New York as a printer, and after various other stops, returned to the Mississippi to work as a steamboat pilot. It was a lucrative trade, but when the Civil War broke out, traveling along the Mississippi became problematic. He went off to Nevada, where Orion now lived, worked in a newspaper, adopted the pen name “Mark Twain,” and then moved to California where he achieved his great fame. It lives on now unabated over a century after he died.
Returning to his youth, there is a long, winding cave about a mile outside of Hannibal. It was known then as McDowell's Cave, after the physician and owner, Joseph McDowell. It would become “McDougal's Cave” in The Adventures of Tom Sawyer where it plays a prominent role. Young Clemens explored the cave frequently during his youth. Like Tom Sawyer, he was an adventurous young man. In the 1880s, after Clemens had achieved great fame as “Mark Twain,” the cave was renamed “Mark Twain Cave.”
One of the features of this large cave, with many passageways breaking off and leading to somewhere in the darkness, is that many who visited it signed their names on the walls. Though privately owned, it officially has been open to visitors since 1886. It has been owned by the same family since 1923. In Clemens' time, and many years after, it required a candle or lantern to explore. In 1939, electric lights were installed, but they still cover only a portion of the miles of passageways. The result is while some signatures are easy to find, others remain unnoticed or a mystery. The location of Jesse James' signature and that of Norman Rockwell have been known for years. While known that Clemens had signed its walls too, the location of his signature, written over a century and a half ago, remained unknown, despite years of searching.
In 1979, Mark Twain Cave was named a national landmark, and at that point, visitors ceased to be allowed to sign the cave walls anymore. However, by then, the sheer volume of signatures made finding any one a battle, especially those in unlighted areas. According to a posting by Linda Coleberd of the owning family on the Mark Twain Cave website, “We have been looking for a Clemens signature for decades, but with three miles of passageways, that means there are six miles of walls to examine. And with 250,000 signatures on the walls, looking for ‘Clemens’ has been like the proverbial needle in the haystack.”
Then on July 26, during a tour with scholars in Hannibal for a conference, Ms. Coleberd and friend and fellow autograph seeker Cindy Lovell went off on another search. This time, they found it. There it was – “Clemens.”
No announcement was made at the time. They wanted to be sure it actually was that of Sam Clemens. It might also have been that of one of his brothers, Orion or Henry. Henry was quickly eliminated, but it took a more thorough study to remove Orion from the possibilities too. However, the writing in the cave is consistent with that of Sam Clemens in 1853. Since that is the year Clemens moved away from Hannibal, it may have been written a bit earlier than that year. Further examination with high resolution photography revealed the name “Sam” had at first been carved at the location.
In her posting, Ms. Lovell said, “Linda and I have been looking for so long, it still seems unbelievable. My single hope has been that someone would find it during my lifetime. Sam knew the cave so well and described it in exact detail. We just knew it had to be in here somewhere.”
This find does not mean searching the cave has been completed. There remains another signature long sought that is still yet to be found. Somewhere in there is believed to be that of Tom Blankenship. Tom Blankenship was a friend of Clemens, a few years older, whose parents provided few limits or control on his behavior. As a result, Blankenship lived as he pleased, though he had nothing and often slept outside in the rain. Despite the privations, Blankenship loved his freedom and was a happy young man. He was the inspiration for Huckleberry Finn.
Sotheby’s Shelf Life: Books, Manuscripts and Works on Paper from the Library of Stanley J. Seeger and Christopher Cone 25 June – July 7
Sotheby’s, July 7: Ludwig van Beethoven. Autograph sketches for the overture "Die Weihe des Hauses", op.124, [1822], UNPUBLISHED. £150,000 to £200,000.
Sotheby’s, July 7: Jane Austen. Pride and Prejudice, 1813, first edition, 3 volumes, contemporary half calf. £50,000 to £70,000.
Sotheby’s, July 7: Walt Whitman. Leaves of Grass, Brooklyn, 1855, first edition, first issue, original green cloth, the Doheny copy. £50,000 to £70,000.
Sotheby’s, July 7: Binding—Sangorski & Sutcliffe—Omar Khayyam. Rubaiyat, London, 1872, third edition, in a magnificent jewelled Peacock binding. £15,000 to £20,000.
Sotheby’s, July 7: George Eliot. Middlemarch, Edinburgh and London, 1871, first edition in the original parts. £20,000 to £30,000.
Forum Auctions The Private Library: Fine Printing & Private Press books, the collection of the late David Chambers July 9, 2026
Forum, July 9: Hassall (Joan) A large collection of over 300 original woodblocks of engravings for various books, v.d., with Hassall's engraver's glass water-globe (Qty) - Est. £10,000-15,000
Forum, July 9: Eragny Press.- [Bradley (Katherine Harris) & Edith Emma Cooper], "Michael Field." Whym Chow, Flame of Love, one of only 27 copies, inscribed by Bradley, the rarest book from the press, 1914. - Est. £3,000-4,000
Forum, July 9: [Moore (Thomas Sturge)] [Wood Engravings], 71 wood-engravings printed by David Chambers from the original blocks, the only set on Japanese Hosho paper, from an edition of 5 sets, [1970]. - Est. £3,000-4,000
Forum Auctions The Private Library: Fine Printing & Private Press books, the collection of the late David Chambers July 9, 2026
Forum, July 9: La Fontaine (Jean de) Contes et Nouvelles en vers, 2 vol., engraved plates after Eisen, fine early 19th century blue morocco, gilt, by Bradel l'ainé, Amsterdam [Paris], 1762. - Est. £2,000-3,000
Forum, July 9: Erotica.- Prostitution.- Pretty Women of Paris (The); Their Names and Addresses, Qualities and Faults..., [Paris], privately printed at the Press of the Prefecture de Police, 1883. - Est. £3,000-4,000
Forum, July 9: Vale Press.- Ricketts (Charles) & Lucien Pissarro. De la Typographie et de l'Harmonie de la Page Imprimée…, [one of 216 copies], bound in dark blue morocco tooled in gilt, by Sarah T.Prideaux, 1898. - Est. £1,000-1,500
Forum Auctions The Private Library: Fine Printing & Private Press books, the collection of the late David Chambers July 9, 2026
Forum, July 9: Martin (John) Illustrations of the Bible, complete set of 20 mezzotints, good impressions, rarely found in early states, [c.1831-1835]. - Est. £1,000-1,500
Forum, July 9: Golden Cockerel Press.- Four Gospels of the Lord Jesus Christ (The), one of 500 copies, Mary Gill's copy, Waltham St. Lawrence, 1931 with a signed proof of engraving on japon numbered 10/10 (2) - Est. £5,000-7,000
Forum, July 9: Boccaccio (Giovanni) The Decameron, 3 vol., vol.1 extra-illustrated by John Buckland Wright with c.150 erotic original drawings in pen & ink and pencil, 1886 [extra-illustrated c.1940]. - Est. £10,000-15,000
Forum Auctions The Private Library: Fine Printing & Private Press books, the collection of the late David Chambers July 9, 2026
Forum, July 9: Cox (Morris) Collection of Gogmagog Press Books, 35 vol., rare complete collection of printed books issued by the press, limited editions, most signed by Cox, 1957-83. - Est. £10,000-15,000
Forum, July 9: Wynkyn de Worde.- [Terentius Afer (Publius)] [Comedie...], [Paris, Josse Badius: sold in London by Wynkyn de Worde, & others], [15 July 1504]. - Est. £4,000-6,000
Forum, July 9: Mosley (James) Ornamented Types. Twenty-Three Alphabets from the Foundry of Louis John Pouchée, 2 vol., one of 10 copies for presentation, from an edition of 210, 1992-93. - Est. £1,000-2,000
Forum Auctions The 10th Anniversary Sale Fine Books, Manuscripts and Works on Paper July 16, 2026
Forum, July 16: Inundation papyrus. P.Michael 4, the ‘Inundation papyrus’, a geographical account of the Nile near Canopus, in Greek, remains of two columns from a manuscript scroll on papyrus, Egypt, second century CE. £12,000-18,000
Forum, July 16: Book of Hours, use of Sarum, manuscript on vellum, 6 full-page miniatures, with famous Middle English inscriptions, Southern Netherlands for the English market, [c.1430]. £30,000-50,000
Forum, July 16: Qu'ran, Arabic manuscript on burnished, stencilled, and gold-flecked paper, 447ff., Sultanate Gujarat, Ahmadabad, [after 1411 but no later than 1442]. £15,000-20,000
Forum Auctions The 10th Anniversary Sale Fine Books, Manuscripts and Works on Paper July 16, 2026
Forum, July 16: Turner (William). A New boke of the natures and properties of all wines that are commonly vsed here in England, rare first edition of the first English book on wine, By William Seres, 1568. £20,000-£30,000
Forum, July 16: Spenser (Edmund). The Faerie Queene. first edition, Printed [by John Wolfe] for William Ponsonbie, 1590. £30,000-40,000
Forum, July 16: Shakespeare (William). The Comedie of Errors, extracted from the first folio, Isaac Jaggard and Edward Blount, 1623. £15,000-20,000
Forum Auctions The 10th Anniversary Sale Fine Books, Manuscripts and Works on Paper July 16, 2026
Forum, July 16: Fleming (Ian). Casino Royale, first edition, signed presentation inscription from the author, 1953. £40,000-60,000
Forum, July 16: d'Agoty (Jacques-Fabien Gautier). Anatomie de la Tête, first edition, Paris, chez le Sieur Gautier, 1748. £10,000-15,000
Forum, July 16: Martial Arts.- Lee (Bruce). 'Praying Mantis style' Kung Fu book, containing numerous annotations, diagrams and graphs in Bruce Lee's hand, c. 1960. £50,000-70,000
Forum Auctions The 10th Anniversary Sale Fine Books, Manuscripts and Works on Paper July 16, 2026
Forum, July 16: Warre (Capt. Henry James). Sketches in North America and the Oregon Territory, first edition, rare hand-coloured issue, 1848. £30,000-40,000
Forum, July 16: Norie (John William). The Marine Atlas, or Seaman's Complete Pilot for all the principal places in the known world..., 1826. £30,000-50,000
Forum, July 16: Mao Tse-tung.- Kim Il-sung.-[Note book for visitors from China to Korea], signed by Mao and Kim, [Beijing, 1954]. £10,000-15,000