Photographic prints, negatives, and slides related to parks, activities in parks, and Parks Department personnel.Images are arranged alphabetically by subject and are a mix of prints, negatives and slides. Some are undated. Ninety-three images are digitized and available online.

Committee meeting records maintained by Benson during his tenure as committee chair. Includes committee calendars with roster of issues and action taken, staff memoranda, correspondence, reports, and draft legislation relating to parks and recreation, and community oriented social services.

Correspondence, memoranda, reports, and reference materials relating to Benson and topics of particular interest to him. Major subjects include parks and recreation, traffic and transportation, and the Westlake Mall Project, the Downtown Seattle Transit Project, the University District Transportation Program, the Waterfront Streetcar, gun control, land use, and solid waste disposal.