Nicholas, of Osimo, –1453: Quadriga spirituale [Italian]
- Manuscripts:
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- MS. Add. A. 5 — 15th century; Italian
- MS. Canon. Ital. 162 — 15th century; Italian
- MS. Canon. Ital. 168 — 1462; Italian
- MS. Canon. Ital. 182 — 15th century; Italian
- MS. Canon. Ital. 225 — 15th century; Italian
The above references reflect only the current coverage of the online catalogue and may not be comprehensive.