![[The Canonical
Stack]](http://haddon.archanth.cam.ac.uk/wp-content/themes/cam/images/readercover.jpg "The Canonical Stack")
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
Easter Vacation 2019
The Haddon’s vacation opening hours are Monday-Friday, 09:00-17:00.
We are closed all day at weekends. We plan to close from Good Friday, 19 April, to Easter Monday, 22 April, inclusive — in other words, we shut at 17:00 on Thursday 18 April and re-open at 09:00 on Tuesday 23 April.
We might, during the vacation, need to close at other times for days, half-days, and lunch hours. But we’ll give due notice of such additional closures, if we have to make them.
TUESDAY 23 APRIL
Term-time borrowing rules come back into force. Exam term begins. If any restricted-access loans have been extended for the vac, they’ll be due back on this day.
FRIDAY 26 APRIL
Books borrowed on vacation loan should be returned to the Haddon.
