Emile Berliner, an innovative entrepreneur of the nineteenth and twentieth centuries, invented the microphone, flat recording disc, and gramophone player. This online exhibit of Mr. Berliner draws from the Emile Berliner papers and sound recordings of the Library of Congress's Motion Picture, Broadcasting, and Recorded Sound Division Industry. The collection consists of over 400 items from the manuscript collection and more than 100 sound recordings from the disc collection. Items in the collection range from correspondence, articles, lectures, and speeches to scrapbooks, photographs, clippings, and recordings. Most of the items date from the 1870s to the early 1930s, with a few items dating as late as 1956. Viewers may search the collection by keyword, or browse by recordings, subject, title, series, or name index.