Siddeley Puma Aero Engine second Run @ Retrotec 20-04-2016 - YouTube
The de Havilland / AIRCO DH.9 two seater tractor biplane designed and built by The Aircraft Manufacturing Co. Ltd., Hendon, London, N.W.9. – Engine 250 h.p. Siddeley "Puma". Speed at 10,000ft., 110
Siddeley Puma – World Warbird News
Siddeley Puma, 209hp
Armstrong Siddeley Mamba - Wikidata
Siddeley Puma-Powered DH.9 E8894 Performs First Post-Restoration Flight
Armstrong-Siddeley PUMA / LIBERTY 12 | Aerofossile2012 | Flickr
DH.9 Armstrong Siddeley Puma by Small-Brown-Dog on DeviantArt