Billionaire Washington donor David Rubenstein has made a $10 million gift to the Smithsonian Institution's National Museum of African American History and Culture for its capital campaign, the Associated Press reports.
In addition to his gift to the museum's capital campaign, Mr. Rubenstein, co-founder of the Carlyle Group, a private-equity firm, is lending the museum two documents signed by Abraham Lincoln: the 13th Amendment and the Emancipation Proclamation.
Mr. Rubenstein is a Smithsonian Board of Regents' executive committee member and co-chair of the institution's $1.5 billion national fundraising campaign. With this latest gift, he now has contributed a total of $44.7 million to the institution.
Fundraising for the museum, which is set to open in September, has reached $252 million of its $270 million goal.
Mr. Rubenstein ranked 21st on The Chronicle's 2014 list of the 50 most generous donors.