The part on the minor makers had already been updated - see here - and is now well over ten years old, so also out of date. The page originally on site here was written in 2001, and we've moved on considerably since then, for example the Wheatstone ledgers have been published and transcribed and there is an index here, as well as much more on that site, and I've also added software related to the ledgers on my site, which you can use to get some idea of instruments not in the ledgers.
So Paul's removal of the page was well justified, as almost all of it was out of date. As Ken said above, I published some new estimates for Lachenal anglo dates based on dealer/repairer markings and addresses from Randall Merris's ?2005? or ?2007? database a good while ago, which was just a different way of looking at the same question. The only data not currently on the web was some predictions on Lachenal English and Duet dates based on Geoff Wooff's idea of using simple formulae. And while the English dates suggested seemed to give reasonable results, both Randy and I have decided (independently!) that the duets were initially numbered in two sets of series which joined later, so that data is out of date.
I did consider reposting the page on my website when it disappeared from here, but it was so outdated I decided not to. My main research now concentrates on recordings, so maybe its time for new blood to take on this task. A new page on my website could be made available if anybody wants to volunteer