don't know if there's any interest but I've got Sopwith's "An account of the mining districts of Alston Moor"
as an ebook - PDF, ePub or plain ole' html (might have a kindle version as well)
I can stick it up on my server for folks to download if anyone wants it
As its way way out of copyright, one of my clients is a small published that can do print on demand titles, so can get it reprinted easily enough too
Strange chap that Sopwith - he's followed me around for 20 years, its only when I got the original deeds for our house and saw he used to own it that I investigated and made all the connections... but thats another story!