Attributed works:
24. Tavola Undecima: Plan of Piranesi's Project for the Sanctuary of S. Giovanni in Laterano, by Giovanni Battista Piranesi's Workshop. Pen and Brown Ink over Pencil, Brown and Grey Wash, 89 by 56.2 cm. (Avery Architectural Library, Columbia University, New York).
Attributed works:
25. Tavola Decimterza: Transverse Sectional View of Piranesi's Project for the Sanctuary of S. Giovanni in Laterano Facing West, by Giovanni Battista Piranesi's Workshop. Pen and Brown Ink over Pencil, Brown and Grey Wash, 93.3 by 62 cm. (The Hermitage Museum, St Petersburg).
Attributed works:
26. Tavola Duodecima: Transverse Section Showing Piranesi's Projected West Wall of the Transept of S. Giovanni in Laterano with the Papal Altar and Baldacchino, by Giovanni Battista Piranesi's Workshop. Pen and Brown Ink over Pencil, Brown and Grey Wash, 56.7 by 88.5 cm. (Avery Architectural Library, Columbia University, New York).
Attributed works:
27a (Left) and 27b. Figure Studies, by Giovanni Battista Piranesi. Brown Ink, 34 by 41.6 cm. (École nationale supérieure des Beaux-Arts, Paris; London Art Market 1960, Photograph Witt Library, Courtauld Institute, London).
Attributed works:
28. Author's Reconstruction of the Architectural Drawing Drawn under (And at 180° to) the Figure Studies in Figs.27a and 27b. Transverse Section of Piranesi's Project for the Sanctuary of S. Giovanni in Laterano Facing East, by Giovanni Battista Piranesi's Workshop.
Attributed works:
29. Tavola Vigesimaterza: Project for Papal Altar in S. Giovanni in Laterano, by Giovanni Battista Piranesi's Workshop. Pen and Brown Ink over Pencil, Brown and Grey Wash, 90.6 by 59.4 cm. (Avery Architectural Library, Columbia University, New York).
Attributed works:
30. Project for the Reliquary for the Heads of Sts Peter and Paul in S. Giovanni in Laterano, by Giovanni Battista Piranesi. Pen and Brown Ink, 33.6 by 18.2 cm. (The Pierpont Morgan Library, New York).
Attributed works:
31. Project for the Reliquary for the Heads of Sts Peter and Paul in S. Giovanni in Laterano, by Giovanni Battista Piranesi. Pen and Brown Ink, 18 by 26.4 cm. (The Pierpont Morgan Library, New York).