The Cantor Center for Visual Arts at Stanford University announced that it has received three significant gifts from separate donors. The bequests greatly increase the museum’s holdings of works by the postwar artist Richard Diebenkorn, Pop art pioneer Andy Warhol, and the African-American painter Jacob Lawrence. The Cantor Center, which opened in 1894, houses one of the largest collections of Auguste Rodin sculptures in the world. The institution also has a sizeable collection of postwar American art.

Phyllis Diebenkorn, a Stanford alumna, donated 26 of her late husband’s sketchbooks, which contain well over 1,000 drawings, to the museum. The sketches, which span Diebenkorn’s long and varied career, will be converted into digital scans, making them readily accessible to students and scholars.