vi 

Many agencies have begun publishing numerous OMB control numbers as amend-
ments to existing regulations in the CFR. These OMB numbers are placed as 
close as possible to the applicable recordkeeping or reporting requirements. 

PAST PROVISIONS OF THE CODE 

Provisions of the Code that are no longer in force and effect as of the revision 

date stated on the cover of each volume are not carried. Code users may find 
the text of provisions in effect on any given date in the past by using the appro-
priate List of CFR Sections Affected (LSA). For the convenience of the reader, 
a ‘‘List of CFR Sections Affected’’ is published at the end of each CFR volume. 
For changes to the Code prior to the LSA listings at the end of the volume, 
consult previous annual editions of the LSA. For changes to the Code prior to 
2001, consult the List of CFR Sections Affected compilations, published for 1949- 
1963, 1964-1972, 1973-1985, and 1986-2000. 

‘‘[RESERVED]’’ TERMINOLOGY 

The term ‘‘[Reserved]’’ is used as a place holder within the Code of Federal 

Regulations. An agency may add regulatory information at a ‘‘[Reserved]’’ loca-
tion at any time. Occasionally ‘‘[Reserved]’’ is used editorially to indicate that 
a portion of the CFR was left vacant and not accidentally dropped due to a print-
ing or computer error. 

INCORPORATION BY REFERENCE 

What is incorporation by reference? Incorporation by reference was established 

by statute and allows Federal agencies to meet the requirement to publish regu-
lations in the Federal Register by referring to materials already published else-
where. For an incorporation to be valid, the Director of the Federal Register 
must approve it. The legal effect of incorporation by reference is that the mate-
rial is treated as if it were published in full in the Federal Register (5 U.S.C. 
552(a)). This material, like any other properly issued regulation, has the force 
of law. 

What is a proper incorporation by reference? The Director of the Federal Register 

will approve an incorporation by reference only when the requirements of 1 CFR 
part 51 are met. Some of the elements on which approval is based are: 

(a) The incorporation will substantially reduce the volume of material pub-

lished in the Federal Register. 

(b) The matter incorporated is in fact available to the extent necessary to 

afford fairness and uniformity in the administrative process. 

(c) The incorporating document is drafted and submitted for publication in 

accordance with 1 CFR part 51. 

What if the material incorporated by reference cannot be found? If you have any 

problem locating or obtaining a copy of material listed as an approved incorpora-
tion by reference, please contact the agency that issued the regulation containing 
that incorporation. If, after contacting the agency, you find the material is not 
available, please notify the Director of the Federal Register, National Archives 
and Records Administration, 8601 Adelphi Road, College Park, MD 20740-6001, or 
call 202-741-6010. 

CFR INDEXES AND TABULAR GUIDES 

A subject index to the Code of Federal Regulations is contained in a separate 

volume, revised annually as of January 1, entitled CFR I

NDEX AND

F

INDING

A

IDS

. 

This volume contains the Parallel Table of Authorities and Rules. A list of CFR 
titles, chapters, subchapters, and parts and an alphabetical list of agencies pub-
lishing in the CFR are also included in this volume. 

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