Columbia subject headings:
Frederick III, Holy Roman Emperor, 1415-1493--Congresses.
Holy Roman Empire--Civilization--15th century--Congresses.
Holy Roman Empire--History--Frederick III, 1440-1493--Congresses.
Pius II, Pope, 1405-1464--Congresses.
Harvard subject headings:
Austria--History--1273-1519--Congresses.
Conference papers and proceedings.
Frederick III, Holy Roman Emperor, 1415-1493--Congresses.
Holy Roman Empire--History--Frederick III, 1440-1493--Congresses.
Pius II, Pope, 1405-1464--Congresses.
Pius II, Pope, 1405-1464. Historia Austrialis--Congresses.
Princeton subject headings:
Austria--History--1273-1519--Congresses.
Frederick III, Holy Roman Emperor, 1415-1493--Congresses.
Holy Roman Empire--History--Frederick III, 1440-1493--Congresses.
Pius II, Pope, 1405-1464--Congresses.
Pius II, Pope, 1405-1464. Historia Austrialis--Congresses.