Calvin Coolidge's Inaugural Address <p class="p1">President Calvin Coolidge's inauguration was the first to be broadcast live over the radio. The microphones are visible in this photograph as a row of circles at the level of the President's head. Approximately 23 million Americans listened to the inauguration radio program, which included a description of the Capitol grounds and a history of presidential inaugurations in addition to the ceremony.</p> Library of Congress Prints and Photographs Division. <a href="http://www.loc.gov/pictures/item/npc2007013072/">View original</a>. 03/04/1925 <a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=38&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=1920-1949">1920-1949</a>