Focuses on the work of Emile Berliner, a prominent inventor at the end of the nineteenth and the beginning of the twentieth centuries who was responsible for the development of the microphone, flat recording disc, and gramophone player. Features correspondence, articles, lectures, speeches, scrapbooks, photographs, catalogs, clippings, experiment notes, motion picture components, and rare sound recordings.Title from Web page (viewed on May 3, 2002).Offered as part of the American Memory online resource compiled by the National Digital Library Program of the Library of Congress