The declaration that 80-90% of all silent films made in the U. S., plus 50% of all U. S. films produced before 1951 (when they created safety film) are already lost forever makes the preservation of the film accessories (posters, movie stills, presbooks, etc.) as the remaining historical documents of this social media even more imperative. BUT...what good is it to preserve these historical production stills if you can't identify...