There are approximately 4.5 linear feet in Unit 13. Major topics or events in Vietnamese history organize the unit. These include, but are not limited to the involvement of foreign powers in Vietnam, the Second World War, Dien Bien Phu, and the Geneva Conference. The history of the Indochinese Communist Party is a particularly lengthy section. Most of the material housed in the collection falls within the period of 1875 to 1954. Materials are generally arranged chronologically by the date the event in discussion occurred. Some anomalies result when a document addresses a lengthy timespan. When a single date is difficult to ascertain, the date of publication is used instead. Unit 13, The Early History of Vietnam, attempts to trace Vietnam's past from prehistoric times to 1954. Materials related to the Geneva Convention of 1954 conclude the chronological scope of Unit 13. Some pamphlets and government documents intersperse the bulk of the unit, which is composed mainly by book fragments, newspaper clippings, and magazine articles. The documentary support for The Pentagon Papers is a significant part of the unit's composition.