American talk-show host Oprah Winfrey is donating $12m (£7.7m) towards a new museum in Washington DC dedicated to African American history.
After previously giving $1m (£640,000) to the National Museum of African American History and Culture, her total contribution is its biggest so far.
The museum on Washington's National Mall is due to be completed in 2015.
It will house a 35-seat theatre named after Winfrey, who is also a member of the museum's advisory council.
Lonnie Bunch, director of the museum said the media mogul had been very much involved in its creation and talks were taking place to acquire memorabilia from her career.