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The First Phone Call

Alexander Graham Bell uttered nine words, “Mr. Watson, come here. I want to see you,” into the mouthpiece of his newly patented device on March 10, 1876. His invention, now known as the telephone, featured “improvements in telegraphy” that allowed several telegraph signals to be sent over one wire using different audio frequencies.

First Roller Coaster

A former coal-carrying railway in Pennsylvania became the inspiration for America’s first roller ... more

Thirteenth Amendment

"Neither slavery nor involuntary servitude, except as a punishment for crime whereof the party ... more

Retrospectacle: The Smiley Face

The smiley face is everywhere, but where did it come from? Learn about the origin of this ubiquitous ... more
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