This week I talk to historian Nicole Hemmer about her new book, Messengers of the Right: Conservative Media and the Transformation of American Politics. Hemmer, who also co-hosts the Past Present podcast, examines the years 1950 to 1980, revealing that long before the rise of Rush Limbaugh and FoxNews, conservative media activists were hard at work establishing media that promoted the modern conservative movement. tags: American history, history podcast