At her death in 1969, Ailsa Bruce bequeathed 153 paintings, primarily by 19th-century French artists, to the National Gallery of Art, as well as establishing a fund for future acquisitions. Among the many works acquired by the Gallery through the Ailsa Mellon Bruce Fund was the portrait of Ginevra de' Benci, the only painting by Leonardo da Vinci in the United States.[5] In 1969, the assets of Paul Mellon’s Old Dominion Foundation were merged into his sister's Avalon Foundation, which was renamed the Andrew W. Mellon Foundation in honor of their father.[6][7]