Girolamo Benzoni (1572[1565]), Historia del Mondo Nuovo, Venice, pp. 12–3; English translation: History of the New World by Girolamo Benzoni, Hakluyt Society, London, 1857, p. 17.
The similarity of Vasari's story to the egg of Columbus story was first pointed out in Our Paper, vo. 10, Massachusetts Reformatory, 1894, p. 285.