There's no way of knowing 'how' a reader will arrive at any page. If they save a local copy there should be a record embedded in the page of exactly where it resides and how to return to the original site. The purpose is to allow the browser to display text to the reader sooner while the images themselves are still downloading. The purpose is to achieve slightly faster negotiation between client and server. Summary Overall appearance and utility is very good.
Page is simple and clean and loads quickly.
The few aesthetic and technical recommendations would perfect it. My sincerest compliments for this page.