When I was a child, my father had a 'Scientific American' monthly magazine subscription for our household. I always got a kick out of the regular features, "50

When I was a child, my father had a 'Scientific American' monthly magazine subscription for our household. I always got a kick out of the regular features, "50 years ago" and "100 years ago", where they excerpted their own actual articles from exactly that long ago. Definitely gave me a sense of perspective on the march of scientific understanding. (By 1995, they were able to add "150 years ago", as they'd been in existence since 1845.)