In 1918, F. W. Berwick and Co. Ltd. from Park Royal in London, had to build 1000 ABC "Dragonfly" engines for the war effort, but it did not deliver any of them as the war ended that year.

-From appendix 6: British company, full name F.W.Berwick & Co. that during the 1st World War made Le-Rhone 9-cylinder rotary engines under license.

-Berwick was the manufacturer of Sizaire-Berwick cars. In the war effort they built engines and aircraft for the air force.

"Berwick-LeRhone engine"

-Drawing of a Berwick engine, taken from an advertisement of that time. F. W. Berwick was based in Park Royal, London, N.W. 10.

From Appendix 10: Better illustration, as a drawing but with greater definition than the main text.

"Ad from Berwick's time (Le Rhone Lic.)"