I wondered about all those images. I was actually going to ask Lisa about them, as I'm sure there were more than just cars.
I have her on Facebook and get comments from her all the time, though I have never "talked" with her on any other platform (ie the phone, etc)
The fact DC loved pictures of friends family and cars (like most of us) I'm sure the issue has come up with his family.
He heavily photo documented findings of his family's involvement in the Civil War, for example.
Documentation of his car was just an extension of that.
I think your effort HRT, is outstanding....as a guy whose had the benefit of Don's photo's for 14 plus years..... I Thank You.
48D