Today, the NRS is the primary publication route for opinions from the federal courts of appeals, the federal district courts, and state appellate courts in many states that currently do not have an official reporter (either because they never had one or they are one of the 21 states who abolished their official reporter in favor of the NRS). The NRS is available at law libraries throughout the United States, and is also available through online legal research databases like Westlaw and LexisNexis. Since the NRS now comprises over 10,000 volumes, and many older cases have been overruled or superseded, only the largest law libraries keep a complete hard copy set on site. Most law libraries either do not carry older volumes or retrieve them on request from off-site compact storage.