On the Euclid display currently on view in the Cambridge University Library’s Entrance Hall through 27 June, see Liam Sim’s entry on the Cambridge University Library Special Collections blog:
Euclid display at the University of Cambridge
Copies of Euclid’s Elements from Cambridge University Library’s collection are now on display. For information on the hours of access and location, see here.
See also Liam Sim’s blog post ‘Reading Euclid at Cambridge’.