Radio.
Roosevelt's radio broadcasts to the nation. His way of reassuring the American public
yes
President Franklin D Roosevelt gave radio talks
FDR's informal radio speeches to the people
Their full name was the "Fireside Chats" and they were a series of radio addresses to the country by Franklin Roosevelt during his presidencies. Radio was the main medium at that time (before TV) and Roosevelt had the perfect radio voice. People clustered around the radio to hear Roosevelt's "Fireside Chats" like they do around the TV today to watch "American Idol".
The Radio
Roosevelt
Radio and print were the only forms of mass media at the time.
fireside chats
fireside chats
Yes, that is what they were called.