Columbia subject headings:
Manuscripts--United States--Catalogs.
Petrarca, Francesco, 1304-1374--Manuscripts--Catalogs.
Harvard subject headings:
Manuscripts--United States--Catalogs
Petrarca, Francesco, 1304-1374--Manuscripts--Catalogs.
Princeton subject headings:
Manuscripts, Italian--United States--Catalogs.
Petrarca, Francesco, 1304-1374--Manuscripts--Catalogs.