[Keith Webb]

Originally Posted by Mike Kelly

Ok yes that all adds up with what the photos are describing . Never heard of a YALE aircraft ? Was it a Canadian design ? OK found this
https://en.wikipedia.org/wiki/North_American_NA-64_Yale

One of the identical twin Payne brothers, John and Alf who became Spitfire pilots both trained in Canada on Harvards and Yales, it was a crash in a Yale ("I rolled it up into a ball") which made it easy to distinguish one from the other after Alf had a front tooth broken.