SuDoc - Government Documents Classification

Ordinary library classification systems such as Dewey Decimal or the Library of Congress  are not used for government documents.  Instead, government documents are classified using their own system which was created by the Office of the Superintendent of Documents at the United States Government Printing Office (the GPO).  This system is called SuDoc for short.  SuDoc classifies documents with a letter prefix primarily based on the agency or part of the government which issued or created the document.  It calls these the "class stems."  The documents within each agency are then further subdivided based on the nature of the document itself.  You can find more information at the Federal Depository Library Program's SuDoc web page.  The table below was copied from that page.

SuDoc can be confusing, especially for first-time users.  If you are having difficulty, please feel free to call the library or use the chat widget found on most library pages in order to get assistance.


Current Lettering for SuDoc Class Stems

As of November 2010, the current lettering used for SuDoc class stems are:


A Agriculture
AE National Archives and Records Administration
B Broadcasting Board of Governors
C Commerce Department
CC Federal Communications Commission
CR Civil Rights Commission
D Defense Department
E Energy Department
ED Education Department
EP Environmental protection Agency
FA Fine Arts Commission
FCA Farm Credit Administration
FHF Federal Housing Financing Board
FM Federal Mediation and Conciliation Service
FMC Federal Maritime Commission
FR Federal Reserve System Board of Governors
FT Federal Trade Commission
FTZ Foreign-Trade Zones Board
GA Government Accountability Office
GP Government Printing Office
GS General Services Administration
HE Health and Human Services Department
HH Housing and Urban Development Department
HS Homeland Security
I Interior Department
IC Interstate Commerce Commission
ID US Agency for International Development
ITC International Trade Commission
J Justice Department
JU Judiciary
L Labor Department
LC Library of Congress
LR National Labor Relations Board
MS Merit Systems Protection Board
NAS National Aeronautics and Space Administration
NC National Capital Planning Commission
NCU National Credit Union Administration
NF National Foundation on the Arts and the Humanities
NMB National Mediation Board
NS National Science Foundation
OP Overseas Private Investment Corporation
P United States Postal Service
PE Peace Corps
PM Personnel Management Office
PR President of the United States
PREX Executive Office of the President
PRVP Vice President of the United States
RR Railroad Retirement Board
S State Department
SBA Small Business Administration
SE Securities and Exchange Commission
SI Smithsonian Institution
SSA Social Security Administration
T Treasury Department
TD Transportation Department
TDA US Trade and Development Agency
VA Veterans Affairs Department
X and Y Congress