The U.S. Army Military History Institute pre-dates the U.S. Army Heritage and Education Center by over 30 years. Formed in 1967 as the Military History Research Collection, a branch of the U.S. Army War College Library, the institute became the primary repository for unofficial Army historical materials. Official U.S. Army records and other materials belong to the National Archives. For most of its existence, the institute was housed in Upton Hall on Carlisle Barracks. Built in 1941 as an academic building for the Medical Field Service School, Upton Hall was adequate as a library but ill-suited for the size and preservation needs of a major archive.