You'll Need A Big Scale.

Browsing through a bookstore today I spotted yet another JFK assassination book. Like many this one claims it was the Mafia that offed him. It got me wondering how much the weight of all the JFK books is. How much would a pile with a single example of every book written on the assassination weigh? Even if you only collected the English language titles I suspect the resulting mass would weigh several tonnes. I doubt there's anyone with a complete collection they could weigh to find out.