The List of Classes is the official listing of publications that are available for selection by depository libraries participating in the Federal Depository Library Program (FDLP) of the Government Printing Office (GPO). It is arranged by the Superintendent of Documents classification system and is designed to group together publications by the same government author. The following SuDoc "stems" are for electronic versions of depository documents from the legislative branch of the federal government that UMLL traditionally selects for its collection in hardcopy format. Asterisk-denoted "*" stems are exceptions and are not among our regular hardcopy selections.