Wearing sun hats and armed with selfie sticks, iPhones, and video cameras, tourists from all over the world visit Harvard Square and Harvard University each summer. Giant tour buses idle on Mount Auburn Street near Lowell House as their passengers march from bus to Square to Yard to Statue and back again. They hear the stories we’ve heard many times before: the Three Lies, the Titanic disaster, and the only surviving book from Harvard Hall. Photos are taken — many, many photos — and memories are made as the next bus arrives.