John Denney Jr. was a railway historian of some repute. He wrote several books
I was drawn to these two photos because they show a railway location that I have never seen photographed: Loggieville, NB at the end of the Loggieville subdivision.

Note the outside-braced boxcars.

The notes show the engine was CN 1002, a 4-6-0. I can't read the number on the express car on the end, unfortunately.
In the August 12, 1945 CN public timetables, there were three daily (except Sunday) mixed trains between Newcastle and Loggieville via Chatham.

I thought you might find these interesting... I certainly do.