SuDoc Call Numbers
The Superintendent of Documents (SuDoc) classification system is an alphanumeric call number system used to shelve U.S. government publications. SuDoc call numbers are frequently given as part of bibliographic citations. The SuDocs system is seperate from the Library of Congress Classification scheme used for other library collections.
Each publication is assigned a letter based on the issuing department:
A = Agriculture Department
AE = National Archives and Records Administration
C = Commerce Department
CC = Federal Communications Commission
D = Defense Department
ED = Education
EP = Environmental Protection Agency
I = Department of Interior
J = Justice Department
L = Labor Department
OP = Overseas Private Investment Corporation
PREX = Executive Office of the President
S = State Department
TD = Transportation Department
Y = Congress