Asia symposium on establishment of botanical garden and development of multi-use tree species – Taiwanese and English. Article by Roland Maurice Jefferson. “The National Arboretum, Its Education and Research Program and Its Role in Improving the Quality of the Flowering Cherry Tree in the United States.” Pages 39-42., 1986

This subseries contains articles and lectures written by Jefferson concerning cherry trees, crabapples, boxwoods, plant labels, Ligustram japonicum, and Ligustram lucidum. Most of the articles are photocopies with the exception of Jefferson's "History, progeny, and locations of crabapples of documented authentic origin," Jefferson's "The Japanese flowering cherry trees of Washington, D.C.," and Jefferson and Kay Kazue Wain's "The nomenclature of cultivated flowering cherries (Prunus)." The lecture programs are originals, except for the Asia Symposium. A few of the articles and lecture programs are in Japanese or Mandarin Chinese. The post-retirement lectures with corresponding programs were presented in Japanese and Mandarin Chinese. The subseries is arranged chronologically.