Approximately 300,000 4"x5" and some 35mm negatives, which comprise the bulk of the Studio's commercial work. Among the more extensive clients are: American Seating, Aquinas College, C&O Railroad, Consumers Powers, Grand Rapids Press, Herpolsheimers, Lions Club, Michcon, Michigan Bell Telephone, Pere Marquette Railway, Peninsular Club, Pennsylvania Railroad, WOOD-TV, WLAV, West Michigan Catholic, and the YMCA.

Images are not necessarily included in an obvious set. For example, the images of John Kennedy, riding on the back of a convertible, during his presidential champaign against Nixon, are included in the Duthler Ford set, since Duthler hired the photos. This means that the more information and keyword clues that the researcher can bring to this list, the more likely the researcher may be in finding a set of negatives which has relevant visual information. Some investigation may be required to identify more key names associated with an event first, before using this list to search for images.