A 500-pages collection of documents in English showing the sovereignty of Vietnam on Hoang Sa (Paracel islands) & Truong Sa (Spratly islands) was introduced at Harvard University on 16/6/2012 after having been sent to the U.S. National Geographic Society and two Senators John McCain and Jim Webb office and the The Center For Strategic & Internatinonal Studies in 2011. This document is being proofread and completed in English in order to bring to overseas libraries especially in the United States at the addresses where the documents used to be distributed by the U.S. Army in the Pacific in 1960s over the sovereignty of Vietnam on disputing territory. It has 11 pages of summary and the full text is nearly 500 pages, including Part I that consists of textual analysis in the sovereignty dispute over the Hoang Sa and Truong Sa by U.S. Army in the Pacific in 1960. The 37 quotations from geography books , Journey of the Western countries from the 19th century and before had clearly stated from 1816 Hoang Sa has belonged to Vietnam. Part II consists of three presentations at the conferences in Hanoi and Philadelphia, USA in 2010. Part III includes the full text of a history dissertation entitled “Establishment of Vietnam’s sovereignty on Hoang Sa and Truong Sa” and the annexes of the thesis updated by the author. There are no other countries like Vietnam where the official history, codified policy books, geography books of Vietnam especial texts of the state, the local commanding sheets, clearly state the establishment of Vietnam’s sovereignty on Hoang Sa and Truong Sa. The most valuable document is the codified policy book of Nguyen dynasty (the nineteenth century reports from high-ranked officers of the Government, and other agencies or the king announcement about the establishment of Vietnam's sovereignty over Hoang Sa archipelago under the Nguyen Dynasty as the current expedition, measuring, sketching Hoang Sa, plug milestone...