1. MS Facsimile 436 Reference (shelfmark): MS Facsimile 436 Title: Scope & Content: Rotographs of Milan, Bibl. Ambrosiana, MS. R. 47 Sup., ff. 43-57b, the treatise De musica, attributed to Bacon (see Glorieux, op. cit., ii, p. 75). Collection Area: Western Manuscripts Languages: English Date Range: Unspecified Extent: 1 item