Though Wikipedia traces the lightbulb joke to the late 1960s, we can do so much better (folks expect that of us, and as you've seen time and again, we strive to deliver). This one's from the 1940s, and not only does it show how many it takes to screw in a lightbulb, it names names as well as explains just why it takes so many (spoiler: they're not electrical engineers). From Michigan State's 1947 yearbook.