A sample post, similar to those I post myself, is this (from here: http://blogs.princeton.edu/notabilia/2013/05/17/shelf-marks-of-sunderland-books/):
Shelf-marks of Sunderland books
For more about the history of the Sunderland Library, see the record for the 18th century manuscript catalogue of the Library held at John Rylands Library:
http://archiveshub.ac.uk/data/gb133-engms62.txt
http://archiveshub.ac.uk/data/gb133-engms62.txt