Virgin and Child with St Anne and St John the Baptist (Burlington House Cartoon)

列奥纳多·达·芬奇, The Virgin and Child with St Anne and St John the Baptist (Burlington House Cartoon), 1499-1500, charcoal and chalk on paper, 55.7 × 41.2 inches c. 1499-1500 (National Gallery, 伦敦). Created by Beth Harris and Steven Zucker.