title: Anniversaries old and new.
authors.forename: Scott D
authors.initials: SD
authors.lastname: Williams
mesh_terms: D000846:Anniversaries and Special Events; D049674:History, 21st Century; D007391:International Cooperation; D010506:Periodicals as Topic / Q000266:history / Q000639:trends; D012106:Research / Q000266:history / Q000639:trends; D014481:United States