Archaeological remains and historic structures and landscapes are important tangible reminders of the United States' rich and diverse cultural heritage. In recent years the stresses on these unique, nonrenewable cultural resources have increased dramatically. This report presents the primary findings of an assessment requested by the House of Representatives Committee on Interior and Insular Affairs. Focus is on the applications of preservation technologies rather than preservation disciplines. The study examines the current use of preservation technologies and identifies research and development needs. It also explores how improvements in Federal policy and implementation can make more effective use of technologies appropriate for managing this country's prehistoric and historic cultural resources. Appendices are: (1) "Cultural Resources Management Laws and Regulations"; (2) "Documentation and Conservation of Rock Art"; (3) "Registration and Private Ownership of Archaeological Objects"; (4) "National Register Criteria from the Introduction to: 'How to Apply the National Register Criteria for Evaluation'"; (5) "National Register of Historic Places Inventory--Nomination Form"; (6) "U.S. National Park Service Cultural Programs"; (7) "Advisory Council on Historic Preservation"; (8) "National Trust for Historic Preservation"; and (9) "National Building Museum." (BZ)