Telecommunications - Modern Media Series Author:Colin Hynson, Janet Chahrour The invention of the telegraph in the first half of the nineteenth century marked the beginning of instant communication across long distances. This book chronicles the development of various communications media since that time, culminating with today's cell phones and satellite communications systems. Barron's ticktock books present inform... more »ation on a wide range of subjects for young adult readers in illustrated, attractive magazine-style layouts. (Ages 10 and older)« less