#7: Postman Carrying a Child in his Mailbag, Back When it Was Legal to Send Kids Through the U.S. Postal Service, 1913
I’m not sure if you’re ready for this, but the explanation accompanying this photo is about ten times more whack than you would probably imagine. So, I’m going to give you a quick opportunity to guess. Let’s see if any of you are smart enough or strange enough to realize. No?

This right here is an officer of the U.S. Postal Service in 1913 carrying a baby he is authorized to deliver on his back. That’s right, folks, it was once legal to send children from place to place via the post. I wonder if they designed a special padded mailbag.