This office maintains microfilms of the holdings of the Albert F. Simpson Historical Research Center in Maxwell Air Force Base, Alabama, which has a considerable amount of materials pertaining to Russia/USSR. A fuller description of some of these items can be found in the entry for the Simpson Center. Researchers may obtain a security clearance to examine pertinent classified documents up to secret by writing to AFSINC, Magazine and Book Division, Attn: Major Kahl, Kelly AFB, TX 78241.