CH651934:
Santa Maria della Salute and the Grand Canal, Venice, (watercolour with touches of white heightening), Callow, William (1812-1908) / Bridgeman Images
XCS6041476:
The Chateau at Amboise, on the Loire, 1836 (pencil, watercolour & bodycolour on blue paper), Callow, William (1812-1908) / Bridgeman Images