The Library retains the past year's volumes of the CFR in paper for research purposes. CFR for earlier years is available on microfiche in the Reserve Room, starting with 1938. This volume, re-issued each year as part of the CFR , can be used to locate current regulations by subject or by U.S. CODE section number. The cross-reference list to US Code section numbers is useful for finding regulations pertinent to specific Code sections. Many items are listed by agency in the subject index.
Subject headings used are somewhat general.
CFR Index for 1938- is available on microfiche in the Reserve Room. The last 2 years are available at KF 70.A3 C63, next to the CF R . This annual set, published by CIS, provides a comprehensive subject index to the CFR . While the index issued by the government as part of the CFR is contained in only one volume, this set is issued in four volumes. It lists under each subject entry the year of the CFR volume indexed, the title number, and the part number within the title.