Those are, I'm pretty positive, Lee Stringers photos which are still up on his flickr account.
Jay Adan also has a very good flickr of SST models.
Both are super helpful for the big 18' model, one of which now appears in the collection of the Callisto Exhibition Group, aka "Science Fiction Archives" in Europe.
The biggest thing I'm still looking for is some pictures of 6' and 9' models, which have disappeared as far as I can tell, probably to the trash dumpster behind SPI. I know most of those had ship names and numbers, and nailing down color and type would make it so much easier as they appeared to be much more varied than the 18' model, which had a blue and tan as far as I've been able to tell.
I would really love to nail down names types etc and then see about getting a decal sheet update together, so that for example the "named" ships like the Bull Run or Boxer could be done on the "other side" of the Rodger Young for variety. And maybe even see the sheet scaled back down for the much more common 19" models floating around. But that is going to mean something more hitting the light of day, as I've poured through everything I could find both online and in print, and then capped the blu-ray about to death trying to resolve some of the names that go with some of the just numbers above as well as type etc. And the Tan is easy to make out, but the difference between the blue and green is very slight and sometimes hard to tell in the actual screen cap. The list above is literally many hours of work digging and zooming and squinting and step forwarding to pick out names and details.
Here is to hoping that someone out there who worked on the show has a "secret" trove of production pics that even if they were not willing to share publicly for whatever reason could at least resolve this list some. At this point I think that is the only likely way that is happening.
Ryan