The Prentice and Paul Sack Photographic Trust has promised to give nearly 800 photographs from the Sacks' private collection to the San Francisco Museum of Modern Art.
This group of photographs joins their 1998 gift of nearly 1,000 works.
This summer, SFMOMA is presenting an exhibition drawn from the Sack photo collection. "Taking Place: Photographs from the Prentice and Paul Sack Collection" is one of the largest ever mounted at SFMOMA, celebrating an unparalleled collection that spans the history of the medium from 1840 to 1975.