Study for the interior composition of the St Peter's Basilica in Rome, by Cordini Antonio known as Antonio da Sangallo the Younger, 1516, 16th Century, inchiostro nero/marrone-nero - disegno a riga e compasso con par. Italy, Tuscany, Florence, Uffizi Gallery, Drawings and Prints Cabinet. Recto of the drawing elevation of the nave and the corresponding aisle chapel dimensioned drawing with autograph notes longitudinal section.