An overview of communication (radio and TV) technology in the 60s. Title sequence of “Bonanza”: shot of an old map of Nevada catching fire to reveal a scenic shot of cowboys racing across a field. Stills of religious paintings (the virgin Mary, a young Jesus learning carpentry). CU of a hand tapping out a telegraph. Stills of early radio communications including ones of Zarnof and Marconi. Footage of radio operators transferring messages by entering slips of code into mainframe computers. An automatic teleprinter typing out a message: “The lazy dog hotline test.