The US Govt. bought some Leicas during WWII through intermediaries in Switzerland and South America. They were shipped through Vichy France and the Iberian peninsula to South, then North America. Leitz Canada is a post war creation. E Leitz New York is a wartime creation. Kodak Ektar lenses can be dated by the first two letter in the serial number. EC is 1941 EA 42, EM 43, EE 44, ER 45.