> B) squeaksource
> There's also a SqueakMap entry for the old system. It didn't load either.
> Complaints about no #stable version etc
> I did see the ConfigurationOfSqueakSource and tried that but again, no
> stable version, no way I spotted to use any other named version that looked
>plausible. I suppose one shouldn't be too surprised since it is pretty old
> but it *is* the system we have as a main repository...
>

Assuming that the "old system" refers to what we now know as squeaksource.com,
then there is no real repository for the sources. It basically exists as a
long running image that has survived into the modern era, with some workspaces
that explain how the image originally came into existance, and how it has
subsequently been maintained in the intervening decades. 

The source.squeak.org image is of newer vintage, and it is closely related
to (same as?) the personalsqueaksource version.

Yes, source.squeak.org is a Personal SqueakSource instance.  They're one and the same.

It is based on the code from the "old system", but simply brought up to modern image with dozens fixes and improvements.