The Hans Ostwald collection contains drawings, photographs, slides, and a limited amount of manuscript materials related to Hans Ostwald and E. Paul Kelly. The architectural drawings are only partially processed, and in many cases only contain a small number of drawing sheets per project. The majority of the photographs were taken by professional photographers, including Kurt Ostwald.

The Hans Ostwald collection contains drawings, photographs, slides, and a limited amount of manuscript materials related to Hans Ostwald and E. Paul Kelly. The architectural drawings are only partially processed, and in many cases only contain a small number of drawing sheets per project. The majority of the photographs were taken by professional photographers, including Kurt Ostwald.