“Program Exchanges Sugar Maple, Crabapple Seeds.” From an unknown source. Topic relates to seed exchange with Russia. , n.d.

The articles about Jefferson incorporate either biographical information or relate to his work with cherry trees in Japan and the United States. Cunningham wrote some of the articles and drafts featuring Jefferson. Lists of citations from various databases are included. All of the articles are photocopies except Diversity, "The National Arboretum and a gift to Japan"; Charlie Walker's "The story of the cherry blossom trees"; ARBOR friends, Jill Lee's "Cherry blossoms: restoring a national treasure"; and Adrian Higgins's "Beyond the Tidal Basin, there's a cherry jubilee." A few of the articles are in Japanese or Mandarin Chinese. The subseries is arranged chronologically.