Abstract: The National Institute of Standards and Technology's Standard Reference Data Program manages a network of data centers that prepare evaluated databases of physical and chemical properties of substances. Databases are available in printed form, on magnetic tapes, diskettes, and through on-line computer networks. This document provides a comprehensive list of the products available from the National Standard Reference Data System (NSRDS) for the years 1987-1989, including indexes qualified by author, material, and property terms. Ordering information and current prices can be found at the end of this document.