1871 In Britain, photographs of prisoners were taken for the first time, originating the world’s first “Rogues Gallery”

The Brits seemed to be very innovative in police work and forensics. No wonder Holmes was so terrific.

1963 Archeologists in the US found evidence that the Vikings arrived in North America 500 years before Columbus

I think I've seen an episode on the History Channel about this. I'd like to see it again because I wasn't paying much attention.