Lead: In 1455, Johannes Gutenberg began the first book printed in the western world using moveable metal type. Those copies of the Gutenberg Bible that have survived are among the most valued artifacts in the world.

Intro.: A Moment in Time with Dan Roberts.

Content: After spending almost two decades in Strasbourg, working secretly on a new type of printing press, Johannes Gutenberg returned to his hometown of Mainz and formed a partnership so as to exploit his revolutionary invention - movable metal type. There is evidence that movable type had been used in China for thousands of years and even in Europe before Gutenberg’s invention, but the process used fashioned letters from clay or porcelain or wood. They would break, splinter or wear down after a few uses. Gutenberg spent years solving the problem of deterioration. Blocks, each one bearing a precise metallic raised letter on its face were held together tightly in a wooden form, ink was rolled over the raised letters, then the form was pressed against paper. Because the letters were metallic they were extremely durable, could be used over and over again and reformatted to make different words and sentences.