All the data in the CVS subdirectory models/ is lacking sources.
I assume that all of them are derived from Oliver Vogel's original models which were licensed GPL v2+.
I do know this for sure for some of the models. In particular I hold copyright in some cases.
The sources which I have are attached.
Some more info is at http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=512284