More than 4,000 prints and 20,000 negatives of the work of the photographer and director Gordon Parks, including ''Charwoman,'' above, as well as a collection of images by Mathew Brady and other early American photographers, have been acquired by the State University of New York's Purchase College, the Gordon Parks Foundation said. Parks, the first black photographer at Life magazine and director of the early blaxploitation film, ''Shaft,'' died in 2006; the following year, his photography was acquired by the Meserve-Kunhardt Collection, which is giving his work to the school, along with 100,000 Civil War-era photographs by Brady, Alexander Gardner and Timothy O'Sullivan, as well as the collection of Ed Clark, another Life photojournalist. Purchase College said that the collections would be housed at its library, where they will be preserved and made available for public view and study. [ABSTRACT FROM PUBLISHER]