I don't know the answer to your question. I do know one of the original Navajo code talkers had a last name of McCabe. I don't recall his first name. I probably have it written down somewhere. If I ever find it I will forward it to you, if you are interested.
I know this from have visited Monument Valley, which is on Navajo land near the 4 corners area of the US. There is a tribute to the code talkers at Monument Valley.
You might try searching the web for info on the Navajo Nation. You might find someone to correspond with that might be able to shed some light on the subject.