I always wonder about the railroad's philosophy of ever stronger ends to
deal with shifting loads. It's as if auto makers worried about making ever
stronger windshields rather than sitbelts and air bags, but it was about
four decades between the first steel ends and load restraining devices.
By the way, what is the earliest the Dreadnaught end was seen? I have a
date of 1925, but maybe someone can beat that? - John