![Engines of Our Ingenuity show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/068/560/small/engines-of-our-ingenuity-houston-public-media.png)
Summary: <p>Episode: Early inventions of the electric telegraph. Today, we look at ninety years of electric telegraphy before Morse.</p>
Summary: <p>Episode: Early inventions of the electric telegraph. Today, we look at ninety years of electric telegraphy before Morse.</p>