"In 1974 he was granted a U.S. patent on a descent guide that he had invented" Aug 1979 doc from R.E. Cook, President of CALPA

"In 1977 he was granted a copyright on the 'Portrait of a Thunderstorm'. This large colourful chart displays a thunderstorm and shows 79 hazards and procedures required for safe flight. This chart has received worldwide acceptance and is on display in most airline, military and weather offices around the world." August 1979 letter by R.E.Cook, President of CALPA

He was one of the first civilian Canadian pilots to take this course.