I agree ... it is most likely a one only!
Perhaps your cousin could contact the Legion that showcased it and ask for further details?
Some Legions have even made patterns for sale as fundraisers.
Here's a PP maple leaf that I have used several times.
I adjust the size according to whatever works for the project at hand.
http://christinacreating.blogspot.ca...f-pattern.html
Here it is in my version of the FWS Pony Club quilt ...
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