While searching for other JAM library related software etc, found the jam2nntp.pl script at GitHub. Cloned the repo locally in order to take a look at it.
There were a several things I was thinking of doing with the jam2nntp script (release it over the Perl FDN, fork it to the FTN Perl team at GitHub (htts://github.com/ftnpl) so I'd have a public place available for what I was going to do) but found that there is no License or Copyright listed anywhere that I can find.
Because of that, I did not fork the project there but did initiate a ticket for the issue. I also found that it has an old (only v0.04) embedded copy of FTN::JAM: initiated a ticket regarding that as well.