About the propeller, Small propeller of Władysław Zalewski’s light engine (probably WZ-18, 18 HP). In possession of Muzeum Techniki, Warsaw, out of the regular exhibition (December 2013).
Construction, The propeller lamination consists of five ash plies.
Aircraft and Engine, The propeller was designed – most likely – for WZ-18, 18 HP engine and WZ-IX Kogutek (Cockerel) aircraft.
- Andrzej Glass „Polskie konstrukcje lotnicze 1893 – 1939” WKiŁ 1976