The Corcoran Gallery of Art was the largest privately supported cultural institution in Washington, DC. The museum's main focus is American art. The permanent collection included works by Rembrandt Peale, Eugène Delacroix, Edgar Degas, Thomas Gainsborough, John Singer Sargent, Claude Monet, Pablo Picasso, Edward Hopper, Willem de Kooning, Joan Mitchell, Gene Davis, and many others. Founded in 1869 by William Wilson Corcoran, the Corcoran was the oldest and largest non-federal art museum in the District of Columbia. Its mission was to be "dedicated to art and used solely for the purpose of encouraging the American genius."