"Tech is constantly progressing and changing. But have you ever stopped and wondered how it all started? In Telephone to Smartphones, discover how the first telephone evolved into the smartphones we have today. Engaging inquiry-based sidebars encourage young readers to think, create, guess, and ask questions about this technology." -- Amazon.com.

"Before smartphones, before the Internet and before the personal computer, a misfit group of technophiles, blind teenagers, hippies, and outlaws figured out how to hack the world's largest machine: the telephone system. Starting with Alexander Graham Bell's revolutionary 'harmonic telegraph,' by the middle of the twentieth century the phone system had grown into something extraordinary, a web of cutting-edge switching machines and human operators...