Thanks to Alan Taylor, renown South African aviation historian, the full results and exclusions of the 1937, 1938 and 1939 Governor-General’s Cup have now been published on this site.
Alan has also written a short biography on Roy Coull, the winner of the first Race. This book, titled OF MOTHS AND MARAUDERS, is available on the internet.
It was interesting to note that the pilots that did not do well in the 1937 Race were unhappy with the handicap system. Looks like nothing has changed in 70 odd years.
The first race covered 1 000 miles and passed through all four provinces. (Natal, Transvaal, Orange Free State and the Cape). Prize money was in the order of £1 000.
Second in that year was Johannes Slabbert in a Waco and third was Rhenia Slabbert in a Hornet
Moth. Rhenia (no relation to Johannes) was the only woman entrant and ended only 3 seconds behind the second placed aircraft.
Full results of the 1937 to 1939 races can be found Here