||Snow 1977, no. 243: "Little that is new since S. is closely adhering to Anglés (1943). There is, on p. 130, an account of how P. Burriel helped spread the erroneous view that the Toledo MS was the earliest extant. The miniatures of musicians in Escurial MS J.b.2 are reproduced and a list of the names of the various instruments is on pp. 131-2."