Dave,
I knew I had it somewhere, especially since I had used the image in my presentation a couple weeks back. Anyway, this is a cool picture, not only does it show the Marion in service, but also locomotive number 6, and some of the Sumpter Valley MOW cars. The angle is unusual as well. My advancing age is making my memory unreliable, but I believe this image came into the railroad collection through Scott Hutton from a friend in Baker City.
Enjoy, Taylor
BTW, Have you tore into the turtlebacks yet?