Presentation of historical data for the rare book field has been evolving for more years than any book collector can remember because it’s been clear and necessary for more than two hundred years that increasing information adjusts understanding, leading to periodic reconsideration of value. And value is important because institutions, collectors and dealers often make their purchase and disposition decisions based on their current understanding of rarity, importance and value. In the world today where value fluctuates, current valuation is always changing.
In the 19th century books and manuscripts were generally thought of as sometimes valuable but rarely significantly expensive. Old auction and dealer records suggest that the absence of detailed data frequently led to pricing decisions based on cost.
In the late 19th century compilations of auction records began to make it possible to understand scale of interest expressed by re-appearances and prices paid. Inevitably over the ensuing decades of the early 20th century cost basis lost relevance as rarity, significance and condition came to dominate pricing calculations.
During the final quarter of the 20th century several series of annually printed books provided auction records of the few firms then conducting book, manuscript, and map auctions. These records were illustrative but hardly complete for they covered only a few of the auction houses, recorded only ‘sold’ material, truncated lot descriptions and charged high initiation fees for subscriptions leading to their records being overwhelmingly used by dealers while rarely by collectors.
In 2002 the Americana Exchange began to offer an online database of auction records. It promised to cover more auction houses and more auctions. Since then the Americana Exchange, now called Rare Book Hub, has grown to more than 2 billion words and 8.7 million full text records including both sold and unsold lots at auctions worldwide in the categories of rare books, manuscripts, maps and ephemera.
At the same time, listing sites such as Abebooks have become immense alternative free databases from which to ‘intuit’ valuation. Such databases show some listings for rare material and many people, particularly those hoping to confirm higher values, can say I saw it listed [not sold] on Abe for $5,000 while simultaneous auction records almost always show the same material selling in the auction rooms at fractions of that value.
Today the Rare Book Hub Transaction Database is widely used both by acquirers and sellers who have come to understand that asking prices on listing sites too often do not reflect actual value.
To understand current value Rare Book Hub provides visitor and subscription access that provide such data.
So, give it a try. It will be easy to use, quick and highly accurate
If you are currently a new or free member and need help to sign in call us at any hour at 877.323.7273 or 415.823.6678. Alternatively contact me by email at bmckinney@rarebookhub.com. We’ll get you started.
Heritage, Dec. 15: Jerry Thomas. How to Mix Drinks, or the Bon-Vivant's Companion, Containing Clear and Reliable Directions for Mixing All the Beverages Used in the United States…
Rare Book Hub is now mobile-friendly!
Bonhams, Dec. 8-18: Autograph Letter Signed ("Martinus Luther") to His Friend the Theologian Gerhard Wiskamp ("Gerardo Xantho Lampadario"). $100,000 - $150,000.
Bonhams, Dec. 8-18: An Exceptionally Fine Copy of Austenís Emma: A Novel in Three Volumes. $40,000 - $60,000.
Bonhams, Dec. 8-18: Presentation Copy of Ernest Hemmingwayís A Farewell to Arms for Edward Titus of the Black Mankin Press. $30,000 - $50,000.
Bonhams, Dec. 8-18: Autograph Manuscript Signed Integrally for "The Songs of Pooh," by Alan Alexander. $30,000 - $50,000.
Bonhams, Dec. 8-18: Autograph Manuscript of "Three Fragments from Gˆtterd‰mmerung" by Richard Wagner. $30,000 - $50,000.
Bonhams, Dec. 8-18: Original Preliminary Artwork, for the First Edition of Snow Crash. $20,000 - $30,000.
Bonhams, Dec. 8-18: Autograph Letter Signed ("T.R. Malthus") to Economist Nassau Senior on Wealth, Labor and Adam Smith. $20,000 - $30,000.
Bonhams, Dec. 8-18: History of the Peloponnesian War by Thucydides Finely Bound by Michael Wilcox. $20,000 - $30,000.
Bonhams, Dec. 8-18: First Edition of Lewis and Clark: Travels to the Source of the Missouri River and Across the American Continent to the Pacific Ocean. $8,000 - $12,000.
Bonhams, Dec. 8-18: Original Artwork for the First Edition of Neal Stephenson's Groundbreaking Novel Snow Crash. $100,000 - $150,000.
Bonhams, Dec. 8-18: A Complete Set Signed Deluxe Editions of King's The Dark Tower Series by Stephen King. $8,000 - $12,000.
Bonhams, Dec. 8-18: Autograph Letter Signed ("John Adams") to James Le Ray de Chaumont During the Crucial Years of the Revolutionary War. $8,000 - $12,000.
Sotheby’s Book Week December 9-17, 2025
Sotheby’s, Dec. 17: Francesco Colonna. Hypnerotomachie, Paris, 1546, Parisian calf by Wotton Binder C for Marcus Fugger. €200,000 to €300,000.
Sotheby’s, Dec. 17: Nausea. De principiis dialectices Gorgias, and other works, Venice, 1523, morocco gilt for Cardinal Campeggio. €3,000 to €4,000.
Sotheby’s, Dec. 17: Billon. Le fort inexpugnable de l'honneur, Paris, 1555, Parisian calf gilt for Peter Ernst, Graf von Mansfeld. €120,000 to €180,000.
Sotheby’s Book Week December 9-17, 2025
Sotheby’s, Dec. 16: Salinger, J.D. The Graham Family archive, including autographed letters, an inscribed Catcher, a rare studio photograph of the author, and more. $120,000 to $180,000.
Sotheby’s, Dec. 16: [Austen, Jane]. A handsome first edition of Sense and Sensibility, the author's first novel. $60,000 to $80,000.
Sotheby’s, Dec. 16: Massachusetts General Court. A powerful precursor to the Declaration of Independence: "every Act of Government … without the Consent of the People, is … Tyranny." $40,000 to $60,000.