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Aaron T. Pratt

@aarontpratt.bsky.social

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

1,283 Followers  |  274 Following  |  296 Posts  |  Joined: 03.07.2023
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Posts by Aaron T. Pratt (@aarontpratt.bsky.social)

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Galileo’s handwritten notes found in ancient astronomy text Discovery sheds new light on how famed astronomer came to lead a scientific revolution

Wild.

www.science.org/content/arti...

04.03.2026 21:52 β€” πŸ‘ 9    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0

Have heard of it but not played. Sad to say that I've had a very hard time getting into video games in adulthood. Any good?

27.02.2026 03:42 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Priority applications came in, and it looks like Evidence in Handpress-Era Books, 1450–1830, will be nice and full.

BUT, I was willing to raise the cap to fifteen, meaning that I now have a couple of open spots, even without any attrition. Join me in Austin this June!

20.02.2026 12:31 β€” πŸ‘ 4    πŸ” 3    πŸ’¬ 0    πŸ“Œ 1

Didn't know that last bitβ€”very cool!

18.02.2026 15:26 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Based on the Chippendale style, the George Kenyon who had the plate made would appear to be the 1702-1780 one. The boards, though, with their "Cambridge panel" design and chunky thistle cornerpieces look before 1740 or 50.

05.02.2026 21:50 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Two diagrams of oversewing methods. From Bernard Middleton, A History of English Craft Bookbinding Technique (London: Holland Press, 1988), p.24.

Two diagrams of oversewing methods. From Bernard Middleton, A History of English Craft Bookbinding Technique (London: Holland Press, 1988), p.24.

Very interesting. I think I'd need to see it in person to be sure, but it looks like an oversewing method along these lines.

What's most interesting to me is that the board style & the bookplate point to a date much more toward the middle of the 18th century than the late.

05.02.2026 21:35 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

I’m curious when in the 18th century in particular this was done. Any chance you have a photo or two of the binding exterior?

28.01.2026 15:08 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

What do the covers look like? And endleaves with watermarks that might (also) help with dating.

28.01.2026 00:35 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0

Oh wait, contemporary bindings. Not looked super carefully at more than a couple. But I recall stubs and, separately, the use of the left margin for a fold.

26.01.2026 02:25 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Creating folds by gluing into stubs or using a whipstitching/oversewing technique. The latter was used by fancy 19th/early 20th-c binders for all kinds of early books, better permitting copies with damaged/rebuilt inner margins and supplied leaves.

26.01.2026 02:21 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 3    πŸ“Œ 0

Fuck this shit.

24.01.2026 16:36 β€” πŸ‘ 11    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Very kind! Really appreciate you watching.

22.01.2026 18:09 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Weak, contestants!

22.01.2026 14:44 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Thanks for the assist. Am terrible about tagging.

22.01.2026 11:18 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Dr. Ann Blair - How Renaissance Scholars and Printers Decided on the Size of Books YouTube video by Harry Ransom Center

If you missed Ann Blair’s @ransomcenter.bsky.social Pforzheimer Lecture last night, you can check it out on YouTube:

www.youtube.com/live/u16QHaI...

I think you’ll agree that it’s both sharp and a lot of fun.

22.01.2026 11:05 β€” πŸ‘ 110    πŸ” 55    πŸ’¬ 2    πŸ“Œ 0

In one hour!

21.01.2026 22:55 β€” πŸ‘ 6    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0

Awesomeβ€”will be sure to introduce myself if/when I see you.

19.01.2026 01:42 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Will be at the Grolier Annual Meeting and all things @bibsocamer.bsky.social. Unfortunately can’t come out until Thursday AM so am missing the showcase the previous day.

19.01.2026 00:30 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Had no idea either. Boom.

15.01.2026 23:58 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Wise.

15.01.2026 23:57 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Crucial pun!

15.01.2026 23:57 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Ben's not wrong.

15.01.2026 23:57 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Hahaβ€”thanks! This one isn’t quite as evil as my DesBib one, but it has some tricks up its sleeve.

15.01.2026 23:28 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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.

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.

Tomorrow’s the first day of my grad seminar for @utaustin.bsky.social English, How to Read an Old Book, 1450–1830.

Just finished stitching up my syllabuses, which we’ll spend quite a bit of time withβ€”as bibliographical objectsβ€”for the first half or so of the term.

15.01.2026 23:19 β€” πŸ‘ 98    πŸ” 8    πŸ’¬ 6    πŸ“Œ 2

(Also, I have no idea how I botched that first post so badly; gonna have to blame my phone.)

07.01.2026 15:01 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Descriptive Bibliography (2026) – CalRBS Aaron T. Pratt

Because I'm a lunatic, I'll also be reprising my @calrbs.bsky.social seminar for the 3rd time in the summer, August 10–14: www.calrbs.org/descriptive-...

06.01.2026 23:20 β€” πŸ‘ 0    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0
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Schedules | Rare Book School

For the first time ever, @ransomcenter.bsky.social host @rarebookschool.bsky.social courses this summer, June 7–12:

L-165: Literary Manuscripts w/ Stephen Enniss & Megan Barnard (this will be excellent)

G-60: Evidence in Handpress-Era Books, 1450–1830 w/ yours truly

rarebookschool.org/schedule/

06.01.2026 23:17 β€” πŸ‘ 38    πŸ” 12    πŸ’¬ 1    πŸ“Œ 2

Happy New Year!

03.01.2026 21:53 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

So grateful we didn’t have a damn written exam.

19.12.2025 15:10 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I feel like I have seen that symbol before in a ye olde book but not as a signature. I wonder what other book Grapheus printed that might have called for it.

17.12.2025 22:15 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0