Costa, Michael. (1808–1884) Important Archive of materials, including his Diary and Signed Will.Papers of the conductor and composer, including a copy of his handwritten will on vellum, an original broadside for a Royal Italian Opera production of The Magic Flute conducted by Costa ( starring Grisi, Viardot, Mario, Ronconi!!), an original CDV photograph portrait, a diary for 1876 kept in a mixture of Italian and English, and a magnificent leather bound Illuminated presentation to him by members of the Sacred Harmonia Society wishing him well in