I always wonder how many sittings such paintings required.
the light is very consistent so its hard for me to tell whether the painter completed his work in one sitting or several.
I suspect he made several studies over a few days. The painting is an obvious studio piece based on size alone.
This approach is called “American Scene” which was all the rage during the WPA period. I don’t know if Clunie had that in mind when he made the painting, however it has that feeling.