- Moscow, State Historical Museum, ms. Sinod. gr. 228: page range 266r–271r
- Acquired: donated by the estate of L.G. Westerink
- Film: 35mm Black-and-white Negative
Prof. Westerink's note:
"Gosudarstvennyi istoricheskii muzei (Moscow, R.S.F.S.R.). Manuscript. Gr. 228 (225 Vlad.) ff. 266 recto-271 recto. Photius, Ep. 1 (Euth.)."
Note at the beginning of the film (in Russian): "Sin. gr. 228".