You should automatically be redirected in a few seconds to [what, at time of writing, I understand to be] the current website of the York Bibliographical Society site. If this does not work, please follow https://yorkbibliographicalsociety.wordpress.com/.
For Peter Lee's site (not updated after August 2016), please follow https://www.york.ac.uk/depts/maths/histstat/pml1/ybs/index_original.htm/.
SPE 2020/10/12