お目にかかれますか?
一般公開されています。裏付けとなる出典は下に記しています。
William E. Norton lived in Boston but spent a great deal of time painting on the coast of Maine. Maine Coast has broad brushstrokes and little detail, suggesting that Norton created it “on the spot” as a study for a more finished work such as Sailing Ship, which was probably painted back in his studio.
スミソニアン・アメリカ美術館