- Moscow, State Historical Museum, ms. Sinod. gr. 203: page range 51v–56r
- Acquired: donated by the estate of L.G. Westerink
- Film: 35mm Black-and-white Negative
Prof. Westerink's note:
"Gosudarstvennyi istoricheskii muzei (Moscow, Russia). Manuscript. Gr. 460 Vlad.
Psellus. De Categ. et al.: ff. 51ss, 338ss."
At the beginning (in Russian): "Sin. gr. 203."