During the Second World War, the British Commonwealth Air Training Plan (BCATP) mobilized Canadian experts, initiated the building of airfields, conducted research into the development of equipment, and provided valuable training and resources to Commonwealth aviators.
Signed in 1939, the Agreement and Plan lasted from 1940 to 1945. During this time, about 151 schools were established across Canada with over 104,000 men and women serving the ground operations. By the end of the War, the BCATP had produced 131,553 aircrew; including pilots, wireless operators, air gunners, and navigators for the Air Forces of Great Britain, Australia, New Zealand and Canada.
Library and Archives Canada Blog 
This is a great collection. Thanks for posting. I am writing an article about my Uncle who served with the RCAF and was a trainer with BCATP. I am wondering if I could purchase a higher resolution image suitable for printing, of one image that has CC BY 2.0 license. Thanks