A section of the dome and trancept of St Peter's 1658

A drawing showing St Peter's decorated for the canonisation of St Thomas of Villanueva in 1658. The decorations show the pilasters of the nave covered with damask, and between the pairs of pilasters the arms of Alexander VII and the King of Spain. In the arches are hung medallions with scenes from the life of the saint.
Descriptive Medium: 'Pen and ink, with grey and brown wash and touches of watercolour, on discoloured white paper', 'pen and ink, grey wash, brown wash, watercolour'