A page of American history

I am not like the usual visitor to foreign countries. I am not crazy about seeing all the touristy spots, like museums, zoos, architectural wonders, statues, caves, and historical monuments, armed with a camera, clicking away frantically so that everything new has been chronicled. But when my daughter Christina suggested during my many visits to the USA that I must break my rule and visit Winterthur in Delaware, the estate that belonged to the late Henry Francis du Pont, I decided to take her advice.