Taking what Shane Lambert said and running with it...
For starters... if I were to do a presentation, it would focus on the fact that American Flyer does NOT solely represent S scale, as most outsiders seem to think, and would reveal the realistic models that both are and have been offered in both brass, other metals, resins and plastics from other S manufacturers. It would be heavy on visual (photographic) evidence.
I have done essentially this very same thing through my efforts with the displays I have set up at numerous train shows and RPM meetings over the years, but printed media can go so much farther than I can with my displays.
John D