Some recent publications of the Congressional Research Service that have not been made readily available to the public include the following (all pdf).
“Conventional Warheads For Long-Range Ballistic Missiles: Background and Issues for Congress,” updated February 9, 2007.
“The National Biodefense Analysis and Countermeasures Center: Issues for Congress,” updated February 15, 2007.
“Active Military Sonar and Marine Mammals: Events and References,” updated February 12, 2007.
“U.S.-China Nuclear Cooperation Agreement,” updated January 31, 2007.