Folder 4:19 contains correspondence from 1980; Folder 4:20 from 1981; Folder 4:21 from 1982; Folder 4:22 from 1983; Folder 4:23 from 1984; Folders 4:24-4:27 from 1985; Folder 4:28 for 1986; Folders 4:29-4:31 for 1987; and Folders 4:32-4:33 from 1988. Folder 4:25 contains a set of letters from various organizations that were originally found in an envelope labeled "complete set in exact order!" Folder 4:27 contains materials originally found in a folder labeled "Intl. Assoc. Friends of Soviet Ballet." Folder 4:29 contains materials concerning the Moscow Ballet American Debut Tour. Folder 4:33 contains materials found in an envelope labeled "Maya--Boston USA Tour '88." Folders 5:1-5:2 contain correspondence from 1989.