Rome, Biblioteca Casanatense
MS 968, Datable to the 17th century

372 numbered chapters with headings,  55 illustrations
Table of Contents

Opinione di Leonardo da Vinci et modo di dipignere prospettive, ombre, lontananze, altezze, bassezze da presso et da lontano et altro

possible Milanese provenance

This 17th-century manuscript was probably made in Milan and used by Cassiano dal Pozzo in Rome between 1634 and 1640.

See detailed description and analysis GO

This 17th-century manuscript was probably compiled in Milan as it is suggested to the letters “A.M.” written on its spine. The letters “A.M.” have traditionally been interpreted as the initials of Ambrogio Mazenta, the Milanese owner of numerous original manuscripts by Leonardo who visited Rome around 1640 and who was involved in Cassiano dal Pozzo’s editorial project on Leonardo’s Treatise on Painting (Barone 2011). The watermark on the added pages to the manuscript is similar to watermarks documented in Cassiano dal Pozzo’s library, suggesting that RC1 was compiled elsewhere but then made available to Cassiano in Rome (Barone 2011). The textual and visual comparison suggests that RC1 is similar to R1 and VB, two other 17th century copy emanating from Cassiano’s library.
Physical Description
Fols. 1-188, old pagination, 26 x 19.5 cm , fols. 1r-9v Table of Contents
On pages added to the main manuscript: bird in profile inscribed in a circle, similar to watermarks from Cassiano dal Pozzo's library
Steinitz, Treatise on Painting, p. 51 (B, 3); Barone, “Cassiano dal Pozzo's manuscript copy of the Trattato: new evidence of editorial procedures and responses to Leonardo in the seventeenth century” Raccolta Vinciana, 35 (2011), pp. 223-286; Farago, "Introduction," Re-Reading Leonardo, 2009, 1-36; Sconza, La réception du Libro di pittura de Léonard de Vinci: de la mort de l’auteur à la publication du Trattato della pittura (Paris 1651). Ph.D. Diss. Université de la Sorbonne nouvelle Paris III and Università degli Studi di Macerata, 2007.
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