SUDOC AGENCY CLASSIFICATIONS
The first letters of a SuDoc number reflect the department or agency that issues the publication.
The issuing agency is considered the author of a document:
SuDoc
Agency
A
C
D
E
ED
GA
GS
HE
I
J
Ju
L
LC
NAS
S
SI
T
X, Y
Y4
Department of Agriculture
Commerce Department
Defense
Energy
Education Department
General Accounting Office
General Services Adminstration
Health and Human Services Dept.
Interior
Justice
Judiciary
Labor
Library of Congress
NASA
State
Smithsonian Institution
Treasury (includes IRS)
House and Senate Publications
Congressional Committees