Columbia subject headings:
Aretino, Pietro, 1492-1556--Portraits--Congresses.
Sebastiano, del Piombo, 1485-1547--Congresses.
Harvard subject headings:
Aretino, Pietro, 1492-1556--Criticism and interpretation--Congresses.
Aretino, Pietro, 1492-1556--Portraits--Congresses.
Princeton subject headings:
Aretino, Pietro, 1492-1556--Portraits--Congresses.
Portraits.
Sebastiano, del Piombo, 1485-1547--Congresses.