XIV A Study of a young man head with a hat(from the series "I Principi del Disegno")

XIII A Study of a young man head(from the series "I Principi del Disegno")

XXV A Study of a youngman's head(from the series "I Principi del Disegno")

XII A Study of a baby head(from the series "I Principi del Disegno")

XXIII A Study of a man's head with a turban(from the series "I Principi del Disegno")

XXI A Study of a man's head with a turban(from the series "I Principi del Disegno")

XXIV A Study of a crying soldier's head with a turban(from the series "I Principi del Disegno")

I Title: I Principi del Disegno(from the series "I Principi del Disegno")

XV A Study of an old soldiers' head with a helmet(from the series "I Principi del Disegno")

XX A Study of an oldman's head with a laurel crown (Homer?)(from the series "I Principi del Disegno")

XXII A Study of an oldman's head with a laurel crown (Homer?)(from the series "I Principi del Disegno")

XVI A Study of an oldman's head(St. Peter?)(from the series "I Principi del Disegno")

XVII A Study of an oldman's head(St. Peter?)(from the series "I Principi del Disegno")

XVIII A Study of an oldman's head(St. Peter?)(from the series "I Principi del Disegno")

XIX A Study of an oldman's head(St. Peter?)(from the series "I Principi del Disegno")

XI A Study of a woman head(from the series "I Principi del Disegno")

IX Five studies of heads of an old man with turban, two young men, and two babies(from the series "I Principi del Disegno")

X Studies of two soldiers heads(from the series "I Principi del Disegno")

VIII Two stage of studies of a head of a soldier(from the series "I Principi del Disegno")

IV Four studies of hands(from the series "I Principi del Disegno")

V Five studies of hands(from the series "I Principi del Disegno")

VI Five studies of feet(from the series "I Principi del Disegno")

VII Four studies of feet(from the series "I Principi del Disegno")

II Nine studies of eyes, nose and mouths(from the series "I Principi del Disegno")

III Three studies of ears and two of mouths(from the series "I Principi del Disegno")