Inline six engine hi-res stock photography and images - Alamy
The installation of the four Siddeley Puma engines in the fuselage of the Bristol Tramp, looking aft, Stock Photo, Picture And Rights Managed Image. Pic. MEV-10847330 | agefotostock
Reid Gas Engine Co Siddeley Puma 240 B.H.P. 1917 Instruction Handbook — Essco Aircraft
Siddeley Puma Aero Engine first Run @ Retrotec 20-04-2016 - YouTube
Armstrong-Siddeley PUMA / LIBERTY 12 | Aerofossile2012 | Flickr
Siddeley 'Puma' 230 hp WWI aero engine - MAAS Collection