This report summarizes the General Accounting Office's (GAO) review of six federal agencies' compliance with the National Historic Preservation Act of 1966 and its 1980 amendments. The six agencies have not fully complied with their responsibilities and, as a result, federally owned or managed historic properties have been damaged or allowed to significantly deteriorate. Specifically, the report states that the Secretary of the Interior has not established an adequate preservation training program for the department and that the six agencies have not been adequately protecting, preserving, and maintaining some of their properties. These agencies believe that they need better guidance from the Secretary of the Interior's office and more specific program funding. The GAO recommendations include: (1) ensuring that historic properties be given preference over nonhistoric properties; (2) establishing agency-wide time frames to locate, inventory, and nominate historic properties; and (3) emphasizing that properties must be adequately protected, preserved, and maintained. Appendices contain: (1) Section 110 of the amended National Historic Preservation Act of 1966; (2) a list of the reviewed sites; (3) a list of service awards; and (4) response comments to the GAO's evaluation. Four black and white photographs are included. (DJC)