[David DeWeese]

Thanks everyone for the replies and the helpful information!

I guess that explains the unknown holes on the ends of each door a few inches below where those rod fitting would be. It also appears that the previous owner had the side curtains installed while all that damage was occuring to the doors. All the door skins around the holes where those missing fitting would be installed were badly mangled.

The photo from Mac's, (thanks Grant), look like those fitttings have a square socket on the inside. Did the side curtain rods have a square shank with round rod or...?

Thanks again,
David