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### Principal manuscripts
1\. Vatican, Urb. lat. 1757 — Codicetto / Taccuino (c.1465–1476). Full digital manuscript. [You are not allowed to view links. Register or Login to view.](You are not allowed to view links. Register or Login to view.)
2\. London, British Museum, 1947,0117.2 — Opusculum de architectura, formerly Harley 3281 (c.1474–1482). Digital viewer. [You are not allowed to view links. Register or Login to view.](You are not allowed to view links. Register or Login to view.)
3\. Budapest, Szabó Ervin Library, MS 09.2690 — Codex Zichy, compiled by Angelo dal Cortivo. Scholarly reference, not full digitisation. [You are not allowed to view links. Register or Login to view.](You are not allowed to view links. Register or Login to view.)
4\. Florence, Biblioteca Medicea Laurenziana, Ashburnham 361 — Trattato di architettura civile e militare (c.1480–1482). Digital facsimile. [You are not allowed to view links. Register or Login to view.](You are not allowed to view links. Register or Login to view.)
5\. Turin, Biblioteca Reale, Saluzziano 148 — Trattato di architettura civile e militare (c.1478–1486). Illustrated folio, not complete digitisation. [You are not allowed to view links. Register or Login to view.](You are not allowed to view links. Register or Login to view.)
6\. Siena, Biblioteca Comunale degli Intronati, S.IV.4 — Trattato di architettura civile e militare (c.1496–1497). Catalogue reference. [You are not allowed to view links. Register or Login to view.](You are not allowed to view links. Register or Login to view.)
7\. Florence, Biblioteca Nazionale Centrale, Magliabechiano II.I.141 — Trattato di architettura and Vitruvian translation (c.1497–1500). Digital manuscript. [You are not allowed to view links. Register or Login to view.](You are not allowed to view links. Register or Login to view.)
8\. Reggio Emilia, Biblioteca Panizzi, Regg. A.46/9 bis — Four manuscript folios associated with Ashburnham 361 (c.1480–1482). Digital images. [You are not allowed to view links. Register or Login to view.](You are not allowed to view links. Register or Login to view.)
9\. Siena, Chigi Saracini Collection — Fogli Chigi Saracini, autograph drawings (c.1498–1501). Bibliographic reference. [You are not allowed to view links. Register or Login to view.](You are not allowed to view links. Register or Login to view.)
### Later copies and associated manuscripts
The following are independently identified in the University of Urbino catalogue. I have not verified individual online facsimiles for these unless indicated.
10\. Yale, Beinecke Library, MS 491 — Trattati di architettura, ingegneria e arte militare (c.1510–1520). [You are not allowed to view links. Register or Login to view.](You are not allowed to view links. Register or Login to view.)
11\. Vicenza, Biblioteca Bertoliana, G.3.5.3 — Disegni di macchine e architetture militari (c.1510–1520).
12\. Venice, Biblioteca Nazionale Marciana, Ms. It. IV.3–4 (Marciano 5541) — Trattato di architettura civile e militare (c.1510–1520).
13\. New York Public Library, Spencer 129 — Opera di architettura (c.1520–1530).
14\. Modena, Biblioteca Estense, It.421α.G.4.21 — Libro di macchine (c.1520–1550).
15\. Florence, Accademia di Belle Arti, E.2.I.28 — Trattato di architettura militare, Codex A (c.1530–1540).
16\. Turin, Biblioteca Reale, Serie Militare 383 — Opusculum de architectura (1568 copy of the British Museum manuscript).
Catalogue link for entries 11–16: [You are not allowed to view links. Register or Login to view.](You are not allowed to view links. Register or Login to view.)
### Additional manuscripts containing Francesco-inspired drawings
17\. Vatican, Urb. lat. 1397 — Sixteenth-century drawings connected to Urbino's architectural reliefs. Full digitisation. [You are not allowed to view links. Register or Login to view.](You are not allowed to view links. Register or Login to view.)
18\. Urbino, Santini Collection — Codice Santini, machine drawings, dating and attribution disputed.
19\. Florence, Biblioteca Medicea Laurenziana, Ashburnham 1357 bis — Disegni di macchine, c.1500–1550.
20\. Venice, Biblioteca Marciana, Cod. Lat. VIII, 87 (3048) — Organa Mechanica, sixteenth-century compilation.
Catalogue link for entries 18–20: [You are not allowed to view links. Register or Login to view.](You are not allowed to view links. Register or Login to view.)
1\. Vatican, Urb. lat. 1757 — Codicetto / Taccuino (c.1465–1476). Full digital manuscript. [You are not allowed to view links. Register or Login to view.](You are not allowed to view links. Register or Login to view.)
2\. London, British Museum, 1947,0117.2 — Opusculum de architectura, formerly Harley 3281 (c.1474–1482). Digital viewer. [You are not allowed to view links. Register or Login to view.](You are not allowed to view links. Register or Login to view.)
3\. Budapest, Szabó Ervin Library, MS 09.2690 — Codex Zichy, compiled by Angelo dal Cortivo. Scholarly reference, not full digitisation. [You are not allowed to view links. Register or Login to view.](You are not allowed to view links. Register or Login to view.)
4\. Florence, Biblioteca Medicea Laurenziana, Ashburnham 361 — Trattato di architettura civile e militare (c.1480–1482). Digital facsimile. [You are not allowed to view links. Register or Login to view.](You are not allowed to view links. Register or Login to view.)
5\. Turin, Biblioteca Reale, Saluzziano 148 — Trattato di architettura civile e militare (c.1478–1486). Illustrated folio, not complete digitisation. [You are not allowed to view links. Register or Login to view.](You are not allowed to view links. Register or Login to view.)
6\. Siena, Biblioteca Comunale degli Intronati, S.IV.4 — Trattato di architettura civile e militare (c.1496–1497). Catalogue reference. [You are not allowed to view links. Register or Login to view.](You are not allowed to view links. Register or Login to view.)
7\. Florence, Biblioteca Nazionale Centrale, Magliabechiano II.I.141 — Trattato di architettura and Vitruvian translation (c.1497–1500). Digital manuscript. [You are not allowed to view links. Register or Login to view.](You are not allowed to view links. Register or Login to view.)
8\. Reggio Emilia, Biblioteca Panizzi, Regg. A.46/9 bis — Four manuscript folios associated with Ashburnham 361 (c.1480–1482). Digital images. [You are not allowed to view links. Register or Login to view.](You are not allowed to view links. Register or Login to view.)
9\. Siena, Chigi Saracini Collection — Fogli Chigi Saracini, autograph drawings (c.1498–1501). Bibliographic reference. [You are not allowed to view links. Register or Login to view.](You are not allowed to view links. Register or Login to view.)
### Later copies and associated manuscripts
The following are independently identified in the University of Urbino catalogue. I have not verified individual online facsimiles for these unless indicated.
10\. Yale, Beinecke Library, MS 491 — Trattati di architettura, ingegneria e arte militare (c.1510–1520). [You are not allowed to view links. Register or Login to view.](You are not allowed to view links. Register or Login to view.)
11\. Vicenza, Biblioteca Bertoliana, G.3.5.3 — Disegni di macchine e architetture militari (c.1510–1520).
12\. Venice, Biblioteca Nazionale Marciana, Ms. It. IV.3–4 (Marciano 5541) — Trattato di architettura civile e militare (c.1510–1520).
13\. New York Public Library, Spencer 129 — Opera di architettura (c.1520–1530).
14\. Modena, Biblioteca Estense, It.421α.G.4.21 — Libro di macchine (c.1520–1550).
15\. Florence, Accademia di Belle Arti, E.2.I.28 — Trattato di architettura militare, Codex A (c.1530–1540).
16\. Turin, Biblioteca Reale, Serie Militare 383 — Opusculum de architectura (1568 copy of the British Museum manuscript).
Catalogue link for entries 11–16: [You are not allowed to view links. Register or Login to view.](You are not allowed to view links. Register or Login to view.)
### Additional manuscripts containing Francesco-inspired drawings
17\. Vatican, Urb. lat. 1397 — Sixteenth-century drawings connected to Urbino's architectural reliefs. Full digitisation. [You are not allowed to view links. Register or Login to view.](You are not allowed to view links. Register or Login to view.)
18\. Urbino, Santini Collection — Codice Santini, machine drawings, dating and attribution disputed.
19\. Florence, Biblioteca Medicea Laurenziana, Ashburnham 1357 bis — Disegni di macchine, c.1500–1550.
20\. Venice, Biblioteca Marciana, Cod. Lat. VIII, 87 (3048) — Organa Mechanica, sixteenth-century compilation.
Catalogue link for entries 18–20: [You are not allowed to view links. Register or Login to view.](You are not allowed to view links. Register or Login to view.)