Viola da Gamba: History, Characteristics and Influence - Luthiers
The Viol | Essay | The Metropolitan Museum of Art | Heilbrunn Timeline of Art History
The Orpheon Foundation: William Bowelesse, London, c.a. 1580
Anonymous, Spanish, School of Seville, 17th century | Saint Francis and an Angel with a Viola da Braccio (The Ecstasy of Saint Francis) | The Metropolitan Museum of Art