You can go with the table historical_events and join with historical_events_types, hist_users (on hist_actor_user_id) and hist_workbooks. The latter can then be join with _workbooks.
Make sure you are using left join for hist_users and hist_workbooks if you want other events that are not related to workbooks.
Also note that the event table stores all events so you will have statistics for workbooks that have been deleted since then but should be able to filter them thanks to your join with _workbooks.
I assume _views_stats join with _views and _workbooks would do as well.
Thanks it does help to know where to post. It's a balancing act between knowing that it's likely someone in the Server Admin forum will know the answer with traffic being much lower in Server Admin Forum.
Server Admin Forum is quite before midday in UK presumably because most posters are US based.
Good point. This forum is new so it may take a couple months for it to gain "popularity". As content builds in this forum the search results will have a greater opportunity to point here and direct more traffic. The good thing about this forum is that it is focused on Server only so it's MUCH easier to find server-only content (please give a big thanks to Tracy Fitzgerald and her "A" Team for making this happen ).