Librería Samer Atenea
Kálamo Books
Librería Elías (Asturias)
Librería Kolima (Madrid)
Librería Proteo (Málaga)
Pioneering work on the musical material from the archives of the English court was undertaken by Nagel (1894), Lafontaine (1909) and Stokes (in the Musical Antiquary 1903-1913).