Three-hole punch debut, April 1940


#1

Originally published at: http://boingboing.net/2006/09/06/threehole-punch-debu.html


Rogue time travel issue on Boing category posts
#2

@Falcor: The time monkeys are acting up again.


#3

Surprised it took that long to invent such an obvious device.


#4

BB was around in April 1940?


#5