Columbia subject headings:
Byron, George Gordon Byron, Baron, 1788-1824--Congresses.
Shelley, Percy Bysshe, 1792-1822--Congresses.
Harvard subject headings:
Byron, George Gordon Byron, Baron, 1788-1824--Homes and haunts--Italy--Pisa--Congresses.
Shelley, Percy Bysshe, 1792-1822--Homes and haunts--Italy--Pisa--Congresses.
Princeton subject headings: