12 Masses, 1 Mass Proper section, 1 hymn, 13 motets = 27
Allegri-1, Bermudes-7, R. Ceballos-2, Colin-1, Franco-2, Guerrero-1, Morales-1, Palestrina-1, J. Rivera-1, Serra-1, Torres y Martínez Bravo-1, (Trujillo)-1, Victoria-2, anon-5
ii + 193 paper folios, 440 x 300. Original foliation, 1-193, on upper right rectos. Original covers of leather over boards, in poor condition. Original index of Masses on f. [ii]; other pieces not listed. Copied mostly by a single, unidentified scribe; last piece in different hand. Inked calligraphic initials. Title page on f. [i] has dedication to Manuel Joseph de Quirós, chapelmaster at Guatemala Cathedral in middle decades of 18th century; inscription explains that some Masses were copied from 1602 choirbook written by Gaspar Fernandes (chapelmaster at Guatemala Cathedral).
1760 (dated title page). Copied in Guatemala City, for use by cathedral choir.
Census-Catalogue of Manuscript Sources of Polyphonic Music 1400-1550