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Federal Administrative Law Research Guide: Regulatory History

Resources for researching federal Administrative Law.

Finding Regulatory History

Process

Step 1)

Check the history notes at the end of your most current CFR section. Note the volume, page and year of the Federal Register.

       Example: CFR §17.94   Critical habitats. (on Cornell LII)
       History notes:  [45 FR 13021, Feb. 27, 1980, as amended at 77 FR 25621, May 1, 2012]
       (Volume 45 of the Federal Register, page 13021, dated Feb. 27, 1980) (On Hein Online)

Step 2)

If there are no notes at then end of your specific section, try the end of the preceding section, the end of the first section in the article, or the end of the first section in the title.

Step 3)

Use the history notes to find out the operative dates of the changes to the regulation.

       Example: §17.94   Critical habitats.

       History notes:  [45 FR 13021, Feb. 27, 1980, as amended at 77 FR 25621, May 1, 2012]
       (The amendment is at Volume 77 of the Federal Register, page 25621, dated May 1, 2012)

Step 4)

If historical notes are not available, work backwards for each earlier incarnations of the regulation in the CFR.

See Historical Versions of the CFR on FDsys

THIS GUIDE'S PAGE, "REGULATIONS", LISTS SOURCES CONTAINING HISTORICAL VERSIONS OF THE FR & CFR.

Further Resources

Also see:

Zimmerman's Research Guide (by Lexis)

A Research Guide to the Federal Register and the Code of Federal Regulations (by the Law Librarian Society of Washington, D.C.)