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Media historian Gary R. Edgerton follows the technological developments and increasing cultural relevance of TV from its prehistory (before 1947) to the Network Era (1948-1975) and the Cable Era (1976-1994). He begins with the laying of the first telegraph line in 1844, which gave rise to the idea that images and sounds could be transmitted over long distances. He then considers the remodeling of television's look and purpose during World War II; the gender, racial, and ethnic components of its early broadcasts and audiences; its transformation of postwar America; and its function in the political life of the country. He talks of the birth of prime time and cable, the influence of innovators like Sylvester "Pat" Weaver, Roone Arledge, and Ted Turner, as well as television's entrance into the international market, describing the ascent of such programs as Dallas and The Cosby Show, and the impact these exports have had on transmitting American culture abroad.

Edgerton concludes with a discerning look at our current Digital Era (1995-present) and the new forms of instantaneous communication that continue to change America's social, political, and economic landscape. Richly researched and engaging, Edgerton's history tracks television's growth into a convergent technology, a global industry, a social catalyst, a viable art form, and a complex and dynamic reflection of the American mind and character. It took only ten years for television to penetrate thirty-five million households, and by 1983, the average home kept their set on for more than seven hours a day. The Columbia History of American Television illuminates our complex relationship with this singular medium and provides historical and critical knowledge for understanding TV as a technology, an industry, an art form, and an institutional force.