Mozart, Wolfgang Amadeus, 1756-1791, creator Schikaneder, Emanuel, 1751-1812, librettist. De Gamerra, Giovanni, 1743-1803, tr. Simrock, Nicolaus, 1751-1832, publisher. Peyrotte, Bernard, collector. Martin, Jean-Marie, 1937-1979, collector. John Milton and Ruth Neils Ward Collection (Harvard Theatre Collection) Haverlin Collection, Broadcast Music Inc. (Houghton Library) Packard Humanities Institute Music Collection at Harvard