Columbia subject headings:
Emperors in art--Congresses.
Emperors--Byzantine Empire--Portraits--Congresses.
Portrait sculpture, Medieval--Italy--Venice--Congresses.
Relief (Sculpture), Medieval--Italy--Venice--Congresses.
Relief (Sculpture)--Byzantine influences--Congresses.
Tondo Angaran--Congresses.
Harvard subject headings:
Dumbarton Oaks--Art collections.
Emperors in art
Emperors--Byzantine Empire--Portraits.
Portraits, Byzantine--Italy--Venice.
Sculpture, Byzantine
Tondi--Italy--Venice.
Tondi--Washington (D.C.)
Princeton subject headings:
Emperors in art--Congresses.
Emperors--Byzantine Empire--Portraits--Congresses.
Portrait sculpture, Medieval--Italy--Venice--Congresses.
Portraits.
Relief (Sculpture), Medieval--Italy--Venice--Congresses.
Relief (Sculpture)--Byzantine influences--Congresses.
Tondo Angaran--Congresses.