Watson's notebook records the first words spoken over the phone.

On March 10, 1876, the telephone was born when Alexander Graham Bell called to his assistant, "Mr. Watson! Come here! I want you!" He was not simply making the first phone call. He was beginning a revolution in communications and commerce. It spread a web of instantaneous information across towns, then a continent, then the world, and has greatly accelerated economic development.

Learn more about the invention of the telephone.