Source: Die Wacht am Rhein. Male vocal solo, with orchestra. Carl Wilhelm (Composer), Carl Schlegel (Vocalist -- Baritone Vocal), Walter B. Rogers (Conductor). Recording label: Victor. Recording date: November 10, 1914. Location: Camden, New Jersey. Source of original recording: Recorded Sound Section, Library of Congress. Inclusion of the recording in the National Jukebox, courtesy of Sony Music Entertainment. Available online at: https://www.loc.gov/item/jukebox-11508/