![The Canonical Stack [The Canonical
Stack]](http://haddon.archanth.cam.ac.uk/wp-content/themes/cam/images/readercover.jpg)
The Canonical Stack—book sculpture by Christopher Evans and Issam Kourbaj (photograph, David Webb). The sculpture was an arrangement of books, mainly from the Haddon Library, and was photographed in situ there on 8 March 2008. All the books are now back in their normal use.
The Haddon Library serves the staff, research students and undergraduates of the University, together with members of the Cambridge Antiquarian Society. Staff and students of other Universities are welcome to read here, on production of evidence of academic bona fides. Other visitors should enquire in advance.

You can donate to the Haddon Library online. Or, if you prefer, read the library's appeal and then donate online. Start by clicking the 'Give Online' button above. Thanks!
- News and Events
Lent 2021
- The Haddon Library is currently closed to students, staff and visitors. However, you can book an appointment to borrow or return books from 10.00 am to 1.00 pm, Monday to Friday.
- Please do not come up to the library. If you are borrowing books, we will put them on your record and leave them on the table in the foyer. If you are returning books, please leave them on the same table and we will collect them.
- If you need a chapter or portion of a book, please use the UL’s Scan and Deliver service and a PDF will be emailed to you.
- This term, we are also offering a series of classes on literature searching, referencing and using Zotero, as well as 3-hour writing sessions for dissertation/long-form writers. Book early to avoid disappointment.
- Please email haddon-library@lists.cam.ac.uk with any questions. We are happy to help!
- Follow us on Twitter for updates and library news.
- The university provides several excellent wellbeing resources for students and staff.
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