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
October | 2015 | Old Machine Press
The Siddeley Puma 240 B.H.P. Aircraft Engine Instruction Handbook Oct 1917 Copy | eBay
Siddeley 'Puma' 230 hp WWI aero engine - MAAS Collection