Headings in the addition correspond to series titles in the main accession. The addition contains some material concerning the death of Charles Augustus Lindbergh in 1974, but most of the papers reflect Anne Morrow Lindbergh's activities from 1976 to 1981, including her involvement with a variety of ceremonies commemorating the fiftieth anniversary of her husband's 1927 flight. Incoming correspondence is often annotated. Usually, annotations on general correspondence were made by the secretary, while annotations on personal correspondence were made by Lindbergh. Their abbreviations include "RA" and "RU," for "requests answered" and "requests unanswered," and "LVM" for "lost in volume of mail" (and therefore not answered). Not all drafts and carbons of outgoing correspondence are found under that heading. Some are filed with the letters to which they respond under Correspondence with readers. Materials related to fiftieth anniversary activities are found with the Charles A. Lindbergh Memorial Fund under Institutions, committees, and clubs.