It sounds like a simple question, but there must be only one correct answer. What is it?
When was the name "John Reid" first identified with the Lone Ranger?
It has been suggested the name was first seen on a gravestone the Ranger made for himself, therefore suggesting the name didn't appear in the radio series. But when and where did it appear? In a comic book story? On the TV show?
Where did that name first appear?

The Ol' Sarge