Systems of accounts applicable to Class A, B, C, and D utilities.

Special edition of the Federal Register, containing a codification of documents of general applicability and future effect ... with ancillaries.

The Code of Federal Regulations is the codification of the general and permanent rules published in the Federal Register by the executive departments and agencies of the Federal Government.

Contains all the formal opinions and accompanying orders of the Federal Power Commission ... In addition to the formal opinions, there have been included intermediate decisions which have become final and selected orders of the Commission issued during such period.