Historic Hood River
This image from the Crag Rats collection isn’t labeled, but it’s surrounded by 1960-1970 images by Bill Bryan.
The snowmobile is a “Ski Daddler” which was a popular model produced by AMF in the late 1960s and early 1970s. You can read all about them here. As you colorize this in your mind, paint the machines orange and you’ll probably be in the right family. Those checkered shirts– leave them black and white.