Contains the photographs, slides, photographic albums and negatives taken by, or featuring, Knowles. Images include those of people, buildings, places, and equipment highlighting Knowles life and achievements. Many of the photographs originally contained labels or descriptions of the images, which have been preserved.

Contains the photographs, slides, photographic albums and negatives taken by, or featuring, Knowles. Images include those of people, buildings, places, and equipment highlighting Knowles life and achievements. Many of the photographs originally contained labels or descriptions of the images, which have been preserved.

Contains the photographs, slides, photographic albums and negatives taken by, or featuring, Knowles. Images include those of people, buildings, places, and equipment highlighting Knowles life and achievements. Many of the photographs originally contained labels or descriptions of the images, which have been preserved.