XEE4161140 London, 1862: grand concert with Lady Osborn, duo of two organs ???lexandre pere et fils?? by Louis Engel, professor of organ at the London Conservatory, and Auguste Durand, organist of Saint Roch. Engraving in ??????Le Monde Illustre??????n簞279 of August 16, 1862. by French School, (19th century); Private Collection; (add.info.: London, 1862: grand concert with Lady Osborn, duo of two organs ???lexandre pere et fils?? by Louis Engel, professor of organ at the London Conservatory, and Auguste Durand, organist of Saint Roch. Engraving in ??????Le Monde Illustre??????n簞279 of August 16, 1862.); Stefano Bianchetti.