The Fine Print: Embed courtesy of our friends at Getty Images, who have the photographic history of the 20th and 21st century on file. This is the first GettyImages slide show for the site. We appreciate their kindness in making it possible. They remain the internet’s go-to source for photos. This visual has not been altered in any way. The Nightshift is a production of Perception Engineering and The Media Bunker. This post is number 1014 for this site. Thanks for reading.