Duncan Phillips and his wife created a small and very fine collection of art. It is open to the public in Washington DC. There is an entry fee. http://www.phillipscollection.org/index.aspx
'Aspiration," by Augustus Vincent Tack. 1931. Oil on canvas
'The Mediterranean,' by Gustave Courbet. 1857.
'New York, Lower Manhattan,' by Stefan Hirsch. 1921.
'The Migration Series, Panel no. 59: In the North they had the freedom to vote,' by Jacob Lawrence. 1940-41. Casein tempera on hardboard.