My post included the following:
"I should add that Guy Anderson was my art 'instructor' once upon a time. In retrospect, it was probably an example of Richard Fuller [head of the Seattle Art Museum] helping out an artist in need. What happened was that, during my senior year in high school, the Seattle Art Museum held an all-city art class wherein each of the eight public high schools sent two students to it one afternoon a week. For a reason I do not know, I was one of Roosevelt High's representatives. There actually wasn't much or any 'instruction' from Anderson. He'd mostly sit there in his turtle-neck sweater and tweed jacket and puff on a pipe while we students did whatever puttering around we did with our art supplies. The main things I got from the class were a crush on one of the girls and a date for my senior prom with another."
As it happens, I now live right outside the town of La Conner, Washington where Anderson spent a good deal of his life, including his final years. The Museum of Northwest Art in La Conner has some of his paintings.
Washington State's Deception Pass is a narrow strait essentially separating Whidbey Island from the mainland. There are Indian reservations nearby. None of this seems very evident in the painting.
La Conner is located in Skagit County, and there is a Skagit River there.