Rare Book Hub, né Americana Exchange twenty-five years ago, was intended to build a bridge to the future of collecting. Whatever that meant, I didn’t really know. But now I have a clearer idea born of building the Rare Book Transaction History database, that has become something that is greater than the sum of its parts. What does that mean?
We have long had enough information to credibly calculate rarity and value for hundreds of thousands of items and those valuations are useful to the field worldwide.
Now we’re adding an easier way to capture an instant impression of how a printed item would fit into the world of collectibles.
To do this we’ve been running a thought experiment about how we can support libraries worldwide that receive hundreds of thousands of books every day because no one wants to throw them away. Are they valuable, are they rare, or very simply is there any market for them? Tens of thousands of library staff and volunteers handle close to a million donated items a day to identify appealing material that might financially support their institutions.
To do this, we’ve developed software that anyone who has a phone, can point and shoot at a book’s title page and its backside, it’s called the verso. With that we can instantly match our records with these images to provide an estimate of value within 5 seconds.
Older material will often (but not always) have a bit more value. So that’s a good place to start. When team members browse the donations to find interesting possibilities, we’ll immediately report yea or nay and then suggest values and options.
By our calculus and Gemini’s logic, a million gifted books (in many forms) received every day at libraries in the United States by themselves. Using this software, libraries could convert 2% of this material directly into cash in an efficient way.
To test this process, we’re providing free trials to institutions. We’ll give them 200 scans per institution to see if our snaps can be turned into cashflow.
This software will find a place throughout the collectible paper world. For libraries, we have built this for them.
Bonhams, May 5 and Apr. 27 – May 6: 1481 ❧ THE FIRST VIEW OF VENICE. ROLEWINCK, WERNER. 1425-1502. $8,000 - $12,000.
Bonhams, May 5 and Apr. 27 – May 6: 1496 ❧ GREEK INCUNABLE. MANUTIUS, ALDUS. 1449-1515. $15,000 - $25,000
Bonhams, May 5 and Apr. 27 – May 6: 1544 ❧ THE SQUARING OF THE CIRCLE. FINÉ, ORONCE. 1494-1555. $4,000 - $6,000
Bonhams, May 5 and Apr. 27 – May 6: 1544 ❧ ONE OF THE MOST BEAUTIFUL SCIENTIFIC BOOKS OF THE RENAISSANCE. $12,000 - $18,000
Bonhams, May 5 and Apr. 27 – May 6: 1544 ❧ RENAISSANCE CYPHERS AND REBUSES. PALATINO, GIOVANNI BATTISTA. 1515-1575. $3,000 - $5,000
Bonhams, May 5 and Apr. 27 – May 6: 1588 ❧ "ONE OF THE MOST ELEGANTLY PRODUCED OF ALL TECHNOLOGICAL TREATISES." $15,000 - $25,000
Bonhams, May 5 and Apr. 27 – May 6: 1618 ❧ THREE DUTCH EMBLEM BOOKS BY DANIEL HEINSIUS BOUND IN ONE. $5,000 - $8,000
Bonhams, May 5 and Apr. 27 – May 6: 1710 ❧ A BEAUTIFULLY COLORED "PRINT BIBLE". BASNAGE, JAKOB. 1653-1723. $12,000 - $18,000
Bonhams, May 5 and Apr. 27 – May 6: 1818 ❧ EARLY COLOR LITHOGRAPHY. BARTH, JOHANN AUGUST. 1765-1818. $8,000 - $12,000
Bonhams, May 5 and Apr. 27 – May 6: 1896 ❧ KELMSCOTT CHAUCER: THE FINEST BOOK SINCE THE GUTENBERG BIBLE. $60,000 - $90,000
Bonhams, May 5 and Apr. 27 – May 6: 1903 ❧ DOVES PRESS MAGNUM OPUS: THE DOVES BIBLE. $10,000 - $15,000
Bonhams, May 5 and Apr. 27 – May 6: 1680 ❧ FREIBERG FÊTE BOOKS FROM THE GOURARY COLLECTION. $1,000 - $1,500
One of a Kind Auctions Tesla, Einstein & The American Presidency: Rare Historical Documents Ending April 30, 2026
One of a Kind Auctions, Apr. 30: The Republican Court; Autographs of George Washington, (Signers) Thomas Jefferson, Benjamin Harrison, John Dickinson, Charles Carroll of Carrollton and More!
One of a Kind Auctions, Apr. 30: Nikola Tesla Signed Holograph Manuscript Page from "Tidal Wave to Make War Impossible," Describing the World's First Conceived Remotely Operated Weapon of Mass Naval Destruction.
One of a Kind Auctions, Apr. 30: Albert Einstein — Incredible possibly Unique Signed & Inscribed Einsteins hand “Relativitätstheorie / A. Einstein” Booklet: Relativitätstheorie, 10th Ed., 1920, Original Wrappers.
One of a Kind Auctions Tesla, Einstein & The American Presidency: Rare Historical Documents Ending April 30, 2026
One of a Kind Auctions, Apr. 30: James Joyce Personal Copy of Finnegan's Wake (With Signature).
One of a Kind Auctions, Apr. 30: Buster Keaton Flamingo Films / Kennedy Productions Archive Group, 1933–1937.
One of a Kind Auctions, Apr. 30: Extremely rare Josiah Henson (Uncle Tom) Signature & Harriet Beecher Stowe Cabinet Card.
One of a Kind Auctions Tesla, Einstein & The American Presidency: Rare Historical Documents Ending April 30, 2026
One of a Kind Auctions, Apr. 30: William Livingston (Signer of DOI), the New Jersey State Convention had unanimously ratified the Federal Constitution.
One of a Kind Auctions, Apr. 30: Complete 1927 Tunney-Dempsey "Long Count" Fight Ticket Signed by George Getz, with 1923 Dempsey-Firpo Dinner Card and Jack Dempsey Signed Photograph.
One of a Kind Auctions, Apr. 30: James Buchanan Cabinet Signed Autograph album
One of a Kind Auctions, Apr. 30: CHARLES LINDBERGH SIGNS HIS NEW YORK CITY MAYORAL BANQUET INVITATION, JUNE 14, 1927 — THREE WEEKS AFTER THE TRANSATLANTIC FLIGHT
Gros & Delettrez, May 5: APRÈS de MANNEVILLETTE, Jean-Baptiste d’- Le Neptune Oriental.
Gros & Delettrez, May 5: DELISLE, Guillaume – Atlas françois,1725.
Gros & Delettrez, May 5: HONTER. SOPHOCLE - Recueil composite réunissant deux ouvrages.
Gros & Delettrez, May 5: PHÉROTÉE DE LA CROIX, A. - Algemeene weereld-beschryving.
Gros & Delettrez, May 5: LA PÉROUSE, Jean-François de Galaup de - Voyage autour du monde.
Gros & Delettrez, May 5: BLAEU, Guillaume & Jean -Septième volume de la Géographie Blaviane.
Gros & Delettrez, May 5: TATIKIAN, Boğos - Figures et costumes du Levant.
Gros & Delettrez, May 5: GIRAULT DE PRANGEY, Joseph-Philibert -Monument arabes et moresques de Cordoue, Séville et Grenade.
Gros & Delettrez, May 5: CHAMPOLLION le jeune. Monuments de l’Egypte et de la Nubie.
Gros & Delettrez, May 5: CASSAS, Louis-François. - Voyage pittoresque de la Syrie, de la Phénicie, de la Palestine et de la Basse Egypte.
Gros & Delettrez, May 5: SONNERAT, Pierre. Voyage aux Indes orientales et à la Chine.
Gros & Delettrez, May 5: GARNIER, Francis. Voyage d'exploration en Indo-Chine.
Gros & Delettrez, May 5: SUBERBIE, Alix (E. SMITH). Dessins et aquarelles de Madagascar.
Gros & Delettrez, May 5: BYRON -Viage del comandante Byron.
Heritage, May 13: Isaac Asimov. I, Robot. The dedication copy, inscribed to John W. Campbell, Jr.
Heritage, May 13: Aldous Huxley. Brave New World. A fine copy, in a brilliant dust jacket.
Heritage, May 13: Ray Bradbury. Fahrenheit 451. Presentation copy, inscribed by the author.
Heritage, May 13: Robert A. Heinlein. Stranger in a Strange Land. A fine copy, signed by the author.
Heritage, May 13: Jules Verne. Twenty Thousand Leagues Under the Seas. Exceedingly rare true first American edition, first issue.
