Abstract: The Supplement includes the entire Uniform Commercial Code as of May 2021, excluding Article 6, and also includes a selection of other federal statutes and regulations, uniform state laws, and Restatement provisions, aiming to include those items most commonly used in commercial law courses. This leads, among other things, to the inclusion of the Truth in Lending Act, Electronic Funds Transfer Act, the Federal Tax Lien Act, the Uniform Electronic Transactions Act, excerpts from the CISG, and from the ICC’s uniform rules for letters of credit. The Bankruptcy Code, as of June 1, 2021, is reproduced in full. Unlike the UCC, there are no official comments for the Bankruptcy Code, and the legislative history is spotty at best. As a result, only the Code is offered here. In addition, selections from Title 18 and Title 28 of the United States Code that are relevant to bankruptcy law are included.