- Milan, Biblioteca Ambrosiana, ms. E 64 sup.: page range 66v–77r
- Acquired: purchased by library
- Film: 35mm Black-and-white Negative
Note on the box: "Milan. Bibl. Ambrosiana. Cod. Gr. 290. 4 letters of Greg. Akyndinos. fols. 66v-77r."
On the acquisition list, dated on February 1956: "purchase (?)".