Your post brings back a lot of memories!
I have a friend who lives in Naknek, Alaska. When I visited her (in the 70s if I remember correctly), the flight from Anchorage to King Salmon was in a plane that carried cargo in the front and passengers in the back. They slid the divider between the sections based on needs (people vs. stuff).
Those were the days when smoking was still allowed on planes - the smoking zone was on one side of the aisle. Of course that meant that the entire passenger section was full of smoke. Yikes!