From the title block of the drawing: "Easthope Bros. Ltd., Marine Engines, Vancouver, B.C. Mag[neto], Bracket, Handle and Float Member. Drawing Number 2029. Drawn 23 Oct 1939." Never published before 2019-07-21.
Easthope Bros. Ltd., H. Donaldson
CC BY-SA 4.0
Easthope Brothers Limited.