Original:  Examples of the end result of this procedure include the series done by Cambridge on Greco-Roman history, and that of Oxford on British history, which may be found on the reserve stacks of many public libraries in the 21st century.
Revised:  Examples of the end result of this procedure include the series produced by Cambridge on Greco-Roman history, and that of Oxford on British history, which may be found on the reserve stacks of many public libraries in the 21st century.
Edit intent: clarity