1. Add MS 31816 Reference (shelfmark): Add MS 31816 Title: Scope & Content: DUETS by Agostino Steffani; transcribed in score by R. J. S. Stevens. Paper; ff. 139. Circ. 1800. Oblong Folio. Agostino Steffani, composer: Secular music: 18th cent. Collection Area: Music Collections Languages: English Date Range: c 1800 Extent: 1 item