Columbia subject headings:
Manuscripts, Spanish--Catalogs.
Manuscripts--Spain--Catalogs.
Harvard subject headings:
Biblioteca de Menéndez Pelayo--Catalogs.
Manuscripts, Spanish--Spain--Santander--Catalogs.
Manuscripts--Spain--Santander--Catalogs.
Personal archives--Spain--Santander--Catalogs.
Princeton subject headings:
Biblioteca Menéndez y Pelayo--Catalogs.
Manuscripts--Spain--Santander--Catalogs.