Jason W. Dean
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jasonwdean.com
Jason W. Dean
@jasonwdean.com
FSA
Associate Librarian, Spencer Research Library, University of Kansas
Bibliographer & librarian on the edge of the western prairie.

Website: https://www.jasonwdean.com
Faculty Profile: https://spencer.lib.ku.edu/people/jason-dean
January 15, 2026 at 3:53 PM
"Anno virginei partus millesimo quingentesimo decimoquinto die vo.xxvi. mensis Januarij"
January 15, 2026 at 3:28 PM
And OH MAN someone really really really really annotated this:
January 15, 2026 at 3:28 PM
This chart, which I am sure someone knows what it is:
January 15, 2026 at 3:28 PM
Tiny printers' fist!
January 15, 2026 at 3:28 PM
How many tiaras? Three! It must be... POPE GREGORY IX and his decretals (Printed in Lyon, by Fradin in 1515) (new acquisition here at Spencer / @kulibraries.bsky.social from @quaritch1847.bsky.social) 📜 #bookhistory #booksky #libsky #rarebooks :
January 15, 2026 at 3:28 PM
Drop a great pair of eyes from a movie or TV show 👀
January 13, 2026 at 9:39 PM
January 13, 2026 at 2:09 PM
Just me hanging out with a windmill Heidelberg, as one does (at an open house at a local letterpress shop)
December 19, 2025 at 2:51 AM
December 16, 2025 at 2:32 PM
Also, not long but:
December 11, 2025 at 3:11 AM
Why, yes break is treating me well, thank you.
November 27, 2025 at 12:07 AM
WWFBD
November 14, 2025 at 7:10 PM
Working on a some fun stuff for a post next week with @needrain.bsky.social
November 14, 2025 at 2:35 PM
Cataloging a book in signatures, mostly unopened, untrimmed, and unbound. As one does. 📜 #bookhistory #booksky #libsky #rarebooks
October 30, 2025 at 3:05 PM
Good morning from Diné Bikéyah.

(Mostly offline till Sunday)
October 20, 2025 at 1:59 PM
Anyhow, because it works (ish) here's a couple more photos. What does it *do* and how does it work? Stay tuned for a blog post next month!
October 17, 2025 at 1:33 PM
Working on a blog post with my colleague Adrienne about the Hinman Collator, and so 3 of us went upstairs (with trepidation) to see if the Spencer collator still works - IT DOES!* 📜 #bookhistory #booksky #libsky #rarebooks

*except the flasher/oscillator, which is the whole crux of the machine...
October 17, 2025 at 1:33 PM
Beginning an 11 item Welsh bound with…
October 9, 2025 at 2:00 PM
Sometimes bibliography looks like this, and by extension, rare book cataloging. 4 OCLC records, 3 secondary sources, flashlight for watermarks, etc: all to determine that our copy of “Cryes of London” is from 1689, from the fifth edition, first impression: 📜 #bookhistory #booksky #libsky #rarebooks
October 6, 2025 at 5:20 PM
Greetings, fellow Jerome person (from my desk)
October 1, 2025 at 2:03 PM
Toured our offsite high density annex for @kulibraries.bsky.social today: WILD. Was not ready for the sheer scale of the place, but loved how cold they keep it! 2.3 (ish) million items… and growing every day.
September 25, 2025 at 9:25 PM
Thank you! I haven’t messed with it yet, but here’s how it stands before messing about with it
September 24, 2025 at 6:38 PM
Also got to see their Sidereus. A really nice lightly trimmed copy, worth the moon etchings supplied by hand on pasted in paper! Long term work on the revision of Paul Needham’s excellent census with Nick Wilding…
September 10, 2025 at 12:19 PM
And here is the Royal Danish Library’s copy of the 1725 Historia Coelestis. Hoping Rev Flamsteed looks kindly on our work. This copy turned up some interesting material, including the binding with the cipher of Christian the 7th!
September 10, 2025 at 12:18 PM