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The Internal Revenue Bulletin (IRB) is the authoritative instrument for announcing official rulings and procedures of the IRS and for publishing Treasury Decisions, Executive Orders, Tax Conventions, legislation, court decisions, and other items of general interest.
Internal Revenue Bulletin by
Call Number: KF 6372 .A2 U5
Publication Date: 1919- present
The IRS discontinued the publication of the Cumulative Bulletin as a separately paginated volume in 2008. Now, it is just a compilation of all the weekly Internal Revenue Bulletins for the six month period.
Lexis Advance has Internal Revenue Bulletins from 1954 - present. Westlaw has them from 1919 - present.