At one time, an archive of Mathematica notebooks illustrating use of David Park's Presentations add-on appeared at: http://blackbook.mcs.st-and.ac.uk/~Peter/djmpark/html/
That page is now dead. Is there some other place where those notebooks may now e found?
Their gone, but I still have some of the PDF files such as the attached one.
I actually have some (possibly all) of the notebooks themselves, but I was hoping there was still a publicly-available web site with links to them.