Aaron T. Pratt

@aarontpratt.bsky.social

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Pforzheimer Curator of Early Books & Manuscripts at the Harry Ransom Center. Bibliographer, book historian, and VHS guy.

Group of ten syllabuses for Evidence in Handpress-Era Books, 1450–1830. All in stab-stitched “pamphlet” form.
Two diagrams of oversewing methods. From Bernard Middleton, A History of English Craft Bookbinding Technique (London: Holland Press, 1988), p.24.
A somewhat spread out stack of stab-stitched (pamphlet-sewn) syllabuses for the course, How to Read an Old Book, 1450–1830. Viewed from above, on a wood table.
Biblia latina (Mainz: Johann Gutenberg and Johann Fust, between 1454 and 1456). 603 verso and 604 recto Today, we expect the text in most books to be black. To navigate pages, we rely on variations in typography and layout: display fonts, centered text, indents, and other creative uses of white space. These design elements signal chapter, paragraph, and other content divisions. When Gutenberg and his team were developing their new printing technology, though, color often did this work. Aware of readers’ expectations, they developed a two-pass process for including red text alongside black but quickly judged it too time-consuming. After only five pages with red print, they began leaving blank spaces for customers to fill in later, by hand. For initial capitals, chapter numbers, and running headers, the scribes who helped turn Gutenberg’s black-and-white sheets of print into readable pages needed to be reasonably familiar with the Bible and fluent in Latin. In the leftmost column, for instance, the scribe had to know that “dmone” calls for an “A” in front. Admone illos. Admonish them. Perhaps unsurprisingly, mistakes with initials were not uncommon. Here, the red “P” beginning “Philemoni” appears on top of a blue “T.” A scribe had originally written the letter that begins “Thytum” in the preface to Titus, which is on the previous page. Gutenberg’s team did try, at least, to eliminate guesswork when it came to the longer text marking transitions between books and prefaces: they printed all of it in an eight-page guide that survives today in only two copies. If followed, each space would be perfectly filled. The Carthusians who first owned the Ransom Center’s Bible, though, frequently misjudged what to write, suggesting that they didn’t have the guide at hand. Here are the four pieces of transitional text that should appear in this opening: [image showing the lines as they appear in the guide].
Pages 603v and 604r in the Ransom Center's Gutenberg Bible. They contain the end of Titus, all of Philemon, and the beginning of Hebrews.
The Harry Ransom Center’s copy of the Gutenberg Bible open to the end of Titus through the beginning of Hebrews on a plexiglass cradle behind glass with a printed label in front.
Diagram of a sheet of a long 24mo in 8s with a cut and gathered version of the same.
A hand gripping a stack of stab-stitched pamphlets on the surface of a table. The title page that’s visible identifies them as syllabuses for the 2025 Descriptive Bibliography course at California Rare Book School.
Self-portrait of a 40-something white dude who’s barely awake, sitting in an airplane seat. Wearing an Aus-Rotten t-shirt.
Opening of a book printed in 1588 celebrating Pope Sixtus V’s architectural achievements. Copperplate print on the let shows the Lateran Obelisk. On the right is a letterpress poem in Neo-Latin about it.
Screenshot from a Zoom presentation that shows a PowerPoint slide introducing a talk, "Selling Your Plan in Jacobean England," by Aaron T. Pratt of the Harry Ransom Center. In a camera feed located in the upper-right corner, Pratt begins his talk.
Title-page verso with armorial bookplate of Philip Sidney, 4th Earl of Leicester, Viscount Lisle, and Baron Sidney of Penshurst.
Title page of Thomas Browne’s Pseudodoxia Epidemica (1659).
Representation of a woman removed from her mummified body, painted in encaustic (hot wax) on a thin wooden panel. Manchester Museum, The University of Manchester, 2266.
Papyrus fragment of the Gospel of John, Chapter 18, verses 31-33 (recto) and 37-38 (verso), in which Christ appears before Pilate. John Rylands Research Institute and Library, University of Manchester, Greek P 457.
Photograph of a printed broadside from 1605 that depicts and describes (in German) the people and places involved in the papal conclave that May.
Hand holding a copy of Meroz Cursed (1642) open to its title page, with a cup of coffee and unlit candle in the background.
Hand holding a paperback book showing its front cover: Jay Williams, The Witches. Additional text reads, “Scotland, 1590—Treason, conspiracy, the shocking orgies of the Black Mass, and a daring sou who challenged the devil-god leader himself”
A bust-length photo of the post author in a hooded sweatshirt looking (more than) a bit worn down.
Screenshot of the title slide from a PowerPoint presentation. Hunter orange text reads "Board in Boston" and "Aaron T. Pratt, Harry Ransom Center, The University of Texas at Austin." The background shows a 16th-century engraving of a sash sawmill that has been tinted green.
Photograph of the Ransom Center’s copy of the Gutenberg Bible in its display case. Volume 1 is open to pages of the Book of Psalms. The second volume is closed, showing its binding. A label rests in front of the open volume.
Hand holding printed rack card for an upcoming Ransom Center exhibition, Words and Wonder: Rediscovering Children’s Literature. Dates indicate that show runs from February 25 to August 17, 2025.
Two paperbacks of Miss Lonelyhearts with rounded corners face up on a table.
Photo looking down on a hand holding a thick book, showing its roughly 2” wide top edge.
Title-page of Cornelis Schoon, Terentius Christianus, 3 Vols. (Cologne: Gerhard Grevenbroich, 1618–1620).
Photo of a hand holding an early 17th-century book that is nearly as thick as it is tall. The fore-edge faces the camera and part of the plain leather front cover is visible.
Aaron T. Pratt speaking to a group of Descriptive Bibliography students in a special collections classroom at UCLA. The students are seated at tables with early incunabula on book supports.
A man, Aaron T. Pratt, holding his face close to a book open to a printed portrait of John Bale.
Photo of page with the quotation from this post highlighted.
Paperback book on a wooden table, Josephine Tey’s The Franchise Affair. Published by Berkley Medallion, it shows a box of chocolates with a woman’s head sitting on top. Her long hair covers some of the chocolates, and her left eye is bruised and swollen.
Hand holding a book showing its dust jacket: William Targ and Lewis Herman, The Case of Mr. Cassidy (New York: Phoenix Press, 1939)
Two people sitting in chairs on a stage: Alan Farmer on the left; Aaron Pratt on the right. Alan is answering an audience question while Aaron looks on.
Title-page of the first revised edition of the first and second parts of Hudibras, published together in 1674.
Screenshot of Columbus Dispatch op-ed by Merle Pratt, “Opioid manufacturers targeted veterans.”
Photo of five early Hudibras editions on a dining table next to a laptop, coffee mug, fruit bowl, and Nuremberg Chronicle coloring book.
Photograph of a couple dozen people in the Harry Ransom Center's main exhibition gallery to view The Long Lives of Very Old Books.
Cover of a coloring book with the title, “Book People of the Nuremberg Chronicle.”