The Electronic Code of Federal Regulations recently celebrated its 10th Birthday. The e-CFR is updated daily and provides free access to all titles. It includes regulations currently in effect and links to published amendments in advance of their effective date. While not the “official” version of the CFR (which should be used when citing to the code), it is a good resource to check for the most up to date information. Note that because there is no keyword searching available, this site is best used when a citation is already known. Learn more about the history of this resource here.