By a convoluted set of links, I arrived at
That page did not have the specific details I wanted. However its format
suggested how to organize some data I already had. I went up a level to
Unfortunately clicking on "Parent Directory" led me to a HTML document,
not a list of sister directories of <.../packaging-manuals>.
When I started this post I was thinking "Debian bibliography". But that
has inappropriate connotations for my goal.