The CSS file for the A List Apart article includes this:

@import url(http://www.princexml.com/fonts/larabie/index.css) all;
@import url(http://www.princexml.com/fonts/steffmann/index.css) all;
@import url(http://www.princexml.com/fonts/liberation/index.css) all;

The imported .css files say this:
"To see the full range of fonts listed here, download Prince from
http://www.princexml.com
And run this command:
prince -o sample.pdf http://www.princexml.com/fonts/larabie/sample.html

I've tried to do that in Windows a few different ways, including pasting it into Start>Run, and failed.

Any help to see what those typefaces look like, rather than one by one?

Try running it from the command-line (run "cmd" from Start > Run). We'll need to make this easier in the future.

Wow.
Yes, that would be great.