The Library of Congress has added again to its impressive collection of online learning resources, called American Memory. Anyone who wants to hear Buffalo Bill’s own voice or John Philip Sousa’s original band now can tune in by computer. With the addition of its 111th and 112th collections of materials, American Memory now includes more than 7.5 million items, which the library says is the world’s largest collection of online educational material. “Emile Berliner and the Birth of the Recording Industry” includes more than 400 items from the library’s collection of Berliner’s papers and 108 of his sound recordings beginning in 1894. Berliner was an immigrant from Germany who patented the flat-disc gramophone records that superseded the original cylindrical recordings. Buffalo BillWilliam F. Codyrode for the Pony Express and fought in the Civil War. On the site, he can be heard expressing his views on the situation in Cuba that led to the Spanish-American War. Sousa played in the U.S. Marine Band when he was only 13 and in later life became its leader before forming his own group. The Sousa band toured the United States and abroad for decades, playing some of his famous marches, including “The Stars and Stripes Forever.” The other new collection, “The First American West: The Ohio River Valley, 1750-1820,” contains more than 15,000 pages of original material about areas west of the Appalachian mountains, including comments from several of the nation’s founding fathers about westward immigration and the role of the American Indian.