Did Dumbledore Ever Teach Defence Against The Dark Arts?

Since 1) I’m getting a lot of hits for this at the moment (presumably because of my Crimes of RowlingGrindelwald movie review) and 2) I had to google the answer myself upon exiting the cinema, because the dang movie made me question things I thought I knew about the HP universe, let me lay the answer out right now and now, definitively.

As far as is canon in the HP books 1 – 7, no, Dumbledore didn’t ever teach Defence Against the Dark Arts. It’s specifically noted (I forget in which book, I u...