Louis I. Kahn. (American, born Estonia. 1901–1974). Construction photo, Alfred Newton Richards Medical Research Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania. The Architectural Archives, University of Pennsylvania. Photograph: Marshall D.Meyers.

If you are interested in reproducing images from this site, please visit the Image Permissions page (www.moma.org/explore/collection/image_permissions). For additional information about using content from MoMA.org, please visit About this Site (www.moma.org/about/about_site/).

Copyright The Museum of Modern Art