Columbia subject headings:
Harvard subject headings:
Federico, da Montefeltro, Duke of Urbino, 1422-1482.
Nobility--Italy--Biography
Urbino (Italy)--History.
Princeton subject headings:
Federico, da Montefeltro, Duke of Urbino, 1422-1482.
Italy--History--15th century.
Nobility--Italy--Biography.
Rossi, Giovanni Girolamo, 1505-1564.
Urbino (Italy)--History.