or, search Yale Library holdings below:

Yale Library's Catalog

Yale Library's catalog; start here. Help | Search | Advanced

Yale Finding Aid Database

Finding aids for archival and manuscript materials. Help | Search | Advanced

Digital Collections

Thousands of partial and fully digitized items from a wide range of materials from the Beinecke collections. Help | Search | Advanced

Uncataloged Acquisitions

Brief records of material not found in Orbis or the Finding Aid Database. Help | Search

Medieval & Renaissance Manuscripts

Descriptions of Medieval and Renaissance manuscripts. Help | Search

Yale Papyrus Collection

Catalog of the papyri held at Beinecke; includes digital images. Help | Search
Voices from the Beinecke Library

Eric Knibbs and Beinecke MS 442: The Pseudo-Isidorian Forgeries

Eric Knibbs (Williams College) examines Beinecke MS 442

Eric Knibbs, Assistant Professor of History at Williams College (and Yale Ph.D. 2009), presented his work on Beinecke MS 442, one of the most significant ninth-century copies of a text known as the Pseudo-Isidorian Decretals.  Eric's work demonstrates how MS 442 was assembled to include various forged texts by adding additional sheets to pre-existing quires.  This necessitated adding texts to both the beginning and end of each quire, erasing and rewriting on the existing outer sheets and reassembling the whole to look as undisturbed as possible.  Eric presented his work in Anders Winroth's Medieval Law Seminar held at the Beinecke Library in Fall, 2013.  Eric's work can be found on his blog devoted to Pseudo-Isidore: pseudoisidore.


Beinecke Rare Book & Manuscript Library
121 Wall Street | New Haven, CT 06511
Campus Map

Tel: (203) 432-2977    Fax: (203) 432-4047

USPS: Mailing Address and Information

email: Ask a Librarian



The exhibition gallery is closed while the library's building is under renovation.

Temporary Reading Room Hours 
Monday - Friday: 9 am to 4:45 pm

The temporary reading room is located in Yale's Sterling Memorial Library, across Wall Street from the Beinecke.

Holiday Schedule and Closed Collections Schedule