Maybe everyone knew this, but I sure didn’t. Or maybe most people didn’t know this because we aren’t supposed to know it.
The story came to my attention while discussing this post, about the title “Dr.” being used in dubious circumstances. I was looking at the degrees of other famous figures knows as “Doctor”—Dr. Ruth (like Jill Biden, just a doctorate in education, nothing medical) , Dr. Joyce Brothers (a PhD in psychology), Dr. Phil (once a medical doctor, but he lost his license), Dr. Laura (a degree in…physiology???) and others. Then a commenter mentioned Martin Luther King, Jr., who was frequently and still is frequently referred to as “Dr. King.” The civil rights icon had a doctorate in philosophy from Boston University (my Methodist minister father-in-law had a doctorate in theology from Harvard, and it never occurred to me that he was a “doctor,” nor did he ever suggest that anyone address him as such), but that’s only half the story.
I discovered this, from 1991: