DAVID GOODMAN is professor of history at the University of Melbourne in Australia. He is the author of Gold Seeking: Victoria and California in the 1850s and Radio’s Civic Ambition: American Broadcasting and Democracy in the 1930s.
JOY ELIZABETH HAYES is associate professor of communication studies at the University of Iowa, Iowa City. She is the author of Radio Nation: Communication, Popular Culture and Nationalism in Mexico and co-editor of War of the Worlds to Social Media: Mediated Communication in Times of Crisis.