Father Daniel Codina of Montserrat explains the circumstances surrounding the secret adquisition of music (including the polyphonic choirbooks) by the Monastery of Montserrat from the Monastery of the Encarnación in Madrid. According to the Crónica [of Montserrat] anys 1929-1936, pp. 153 and 156, the puchase took place in 1932 (and not in the 1920s as usually indicated in the literature) through father Antoni Tobella i Guixà (the Librarian of Monteserrat), who went to Madrid for that purpose on 9 November and returned on the 23rd of the same month. An Appendix transcribes Tobella's brief description of the poor condition in which he found the books at the Encarnación. Some 2000 music manuscripts in Montserrat are from the Monastery of the Encarnación; the article includes a list of composers. 

E. Ros-Fábregas