I was advised by Rich Hamilton to secure all BG (Napoleonic and Civil War) files from GS. They've been availabe in the downloads section of SDC for awhile (but - and this is a big but, the software I use adds in characters for spaces- so it is entirely possible that I have to go in and edit all of the names to add say '_' where there are spaces in order to have files work.
Don't take that to mean that the links are broken, as I haven't had time to test all them (nor do I expect to have that time any time soon). It isn't the most exciting thing in the world to spend time on, frankly.

(Sometimes they work, and for whatever reason, sometimes they don't). I also haven't added in the descriptions (which either have to be copied and pasted (I've got a massive text file with all the pertinent info), or typed in manually - see above about the dryness.
Anyway, no in fact they aren't lost - they are secured, and secured against even GS going away. The deal was, is that those files were ones that Rich Hamilton had had stored originally, on SDC -so while Rich can speak for himself, my take on it was that he wanted to retrieve those for the site.
You don't need to register at SDC to get downloaded material. And I have had, what I think is a bot trying to grab a particular file; but if I'm wrong about that -please, by all means, drop me a line and I will get things sorted out.
http://downloads.hist-sdc.com or
http://download.hist-sdc.com