For the old site, I made a zip file containing the entire site. I stopped updating the site – hence also the zip – in 2021, but if you want it, here it is (6 Mb):
There is also the SEAL project, which Heinrich Küttler made: an elaborate ruby script to convert the entire site to a well-formed chord book. It too was based on the old site, so it does not reflect any of the changes after August 2021, but it’s a nice thing to have (pdf, 2.6 Mb).