Professor Heather Simmons at the Law Library has compiled an excellent guide on conducting Federal Tax Research, including the various primary sources, as well as overviews of secondary sources listed in the section necessary to do tax research.

Bloomberg Law: Tax - A tax planning resource offering expert analysis and practice tools from the world's leading tax authorities including legislation, codes, regulations, preambles, cases and IRS publications.  The Library contains the U.S. Income Library, State Tax Library, Estates, Gifts & Trusts Library, and Tax Practice Library.  Coverage includes selected comments by leading tax authorities on a variety of current tax issues, and daily tax news headlines.  Practice Tools include tax forms, Federal tax calendar, and various tables, charts and lists.  It also has the AICPA standards of professional conduct, statements of audit standards, and statements of position. For on campus use only.