This collection of Oliver Hughson Greeley's papers consists primarily of materials related to the development, operations, and promotion of the Boy Builders Clubs and Minimalic Construction, chronicled through correspondence, reports, publications, minutes, clippings, construction drawings, speeches, notes, scrapbooks and memorabilia. Correspondents include timber companies and organizations, educators, Oregon State College and the State College of Washington (now Oregon State University and Washington State University, respectively). The collection also includes personal papers, consisting of correspondence, Hughson's 1882 diary, day books, family history, and other items.