On this day in 1836, Samuel Colt received the patent for the revolver!
Kind of related to your topic, my grandmother bought me a book for my birthday years ago.
It was an "on this day" book which had all kinds of things that happend on my birthday. But, this book was only about things that happend on "my" birthday so it only included things from that exact date.
Pretty cool stuff, and interesting to read later on. She bought it for me when I was 18 I think, but I looked at it when I turned 21 and thought it was pretty neat.