What's more alarming is that it seems those 32 years old files at ftp.funet.fi are mostly unreadable by now. Back then I thought PostScript would last but alas! that is not the case. Ghostcript can show just about the cover page and that's all.
Libreoffice does a little bit better with the DOC-file but it's still not quite right.
So if there is anything to learn it's about persistent document formats. I wish I had known about LaTeX back then.