This part of the Los Alamos National Laboratory's website presents the history of the facility from the development of the first nuclear weapons to its role in the stewardship of the existing U.S. nuclear weapons stockpile. The history is divided into three major sections: Project Y (the laboratory’s contribution to the Manhattan Project), Cold War Years (to the present), and Inside Los Alamos. Each section contains informative summaries as well as links to numerous articles and documents. The site also contains a timeline and short biographies of persons who contributed to the U.S. nuclear program, including all of the laboratory's directors. The site is well-organized and provides both introductory and detailed materials on the history and operation of the laboratory.