Dick, You come across as believing there was only ever one copy of the document. When I was a student, many years ago, at each stage of an essay or dissertation I took a copy or even several copies. The final piece was copied at least twice. One for the college, one for myself, sometimes one for my fellow students to dissect and criticise. Sometimes one for my parents so they could see what their son was up to.

I am sure if the "authorities" could stifle one copy other copies could easily be made available should somebody choose too.