List of IRS Publications that are relevant for solving taxation issues:
Publication Number Title Revision Date or Tax Year
Publication 1
html pdf Publication 1 (12/1998), Your Rights as a Taxpayer 12/1998
Publication 3
html pdf Publication 3 (2007), Armed Forces' Tax Guide 2007
Publication 15
html pdf Publication 15 (2008), (Circular E), Employer's Tax Guide 2008
Publication 15-A
html pdf Publication 15-A (2008), Employer's Supplemental Tax Guide 2008
Publication 15-B
html pdf Publication 15-B (2008), Employer's Tax Guide to Fringe Benefits 2008
Publication 17
html pdf Publication 17 (2007), Your Federal Income Tax 2007
Publication 51
html pdf Publication 51 (2008), (Circular A), Agricultural Employer's Tax Guide 2008
Publication 54
html pdf Publication 54 (2007), Tax Guide for U.S. Citizens and Resident Aliens Abroad 2007
Publication 80
html pdf Publication 80 (2008), (Circular SS), 2008
Publicación 179
html pdf Publicación 179 (2/2008), Circular PR, 2/2008
Publication 225
html pdf Publication 225 (2007), Farmer's Tax Guide 2007
Publication 334
html pdf Publication 334 (2007), Tax Guide for Small Business 2007
Publication 463
html pdf Publication 463 (2007), Travel, Entertainment, Gift, and Car Expenses 2007
Publication 501
html pdf Publication 501 (2007), Exemptions, Standard Deduction, and Filing Information 2007
Publication 502
html pdf Publication 502 (2007), Medical and Dental Expenses 2007
Publication 503
html pdf Publication 503 (2007), Child and Dependent Care Expenses 2007
Publication 504
html pdf Publication 504 (2007), Divorced or Separated Individuals 2007
Publication 505
html pdf Publication 505 (2/2008), Tax Withholding and Estimated Tax 2/2008
Publication 509
html pdf Publication 509 (10/2007), Tax Calendars for 2008 10/2007
Publication 510
html pdf Publication 510 (2008), Excise Taxes 2008
Publication 513
html pdf Publication 513 (1/2008), Tax Information for Visitors to the United States 1/2008
Publication 514
html pdf Publication 514 (2007), Foreign Tax Credit for Individuals 2007
Publication 515
html pdf Publication 515 (3/2008), Withholding of Tax on Nonresident Aliens and Foreign Entities 3/2008
Publication 516
html pdf Publication 516 (4/2005), U.S. Government Civilian Employees Stationed Abroad 4/2005
Publication 517
html pdf Publication 517 (2007), Social Security and Other Information for Members of the Clergy and Religious Workers 2007
Publication 519
html pdf Publication 519 (2007), U.S. Tax Guide for Aliens 2007
Publication 521
html pdf Publication 521 (2007), Moving Expenses 2007
Publication 523
html pdf Publication 523 (2007), Selling Your Home 2007
Publication 524
html pdf Publication 524 (2007), Credit for the Elderly or the Disabled 2007
Publication 525
html pdf Publication 525 (2007), Taxable and Nontaxable Income 2007
Publication 526
html pdf Publication 526 (2007), Charitable Contributions 2007
Publication 527
html pdf Publication 527 (2007), Residential Rental Property 2007
Publication 529
html pdf Publication 529 (2007), Miscellaneous Deductions 2007
Publication 530
html pdf Publication 530 (2007), Tax Information for First-Time Homeowners 2007
Publication 531
html pdf Publication 531 (2007), Reporting Tip Income 2007
Publication 534
html pdf Publication 534 (11/1995), Depreciating Property Placed in Service Before 1987 11/1995
Publication 535
html pdf Publication 535 (2007), Business Expenses 2007
Publication 536
html pdf Publication 536 (2007), Net Operating Losses (NOLs) for Individuals, Estates, and Trusts 2007
Publication 537
html pdf Publication 537 (2007), Installment Sales 2007
Publication 538
html pdf Publication 538 (3/2008), Accounting Periods and Methods 3/2008
Publication 541
html pdf Publication 541 (04/2008), Partnerships 04/2008
Publication 542
html pdf Publication 542 (2/2006), Corporations 2/2006
Publication 544
html pdf Publication 544 (2007), Sales and Other Dispositions of Assets 2007
Publication 547
html pdf Publication 547 (2007), Casualties, Disasters, and Thefts 2007
Publicación 547(SP)
html pdf Publicación 547(SP) (2007), Hechos Fortuitos, Desastres y Robos 2007
Publication 550
html pdf Publication 550 (2007), Investment Income and Expenses 2007
Publication 551
html pdf Publication 551 (5/2002), Basis of Assets 5/2002
Publication 552
html pdf Publication 552 (4/2005), Recordkeeping for Individuals 4/2005
Publication 553
html pdf Publication 553 (4/2008), Highlights of 2007 Tax Changes 4/2008
Publication 554
html pdf Publication 554 (2007), Tax Guide for Seniors 2007
Publication 555
html pdf Publication 555 (5/2007), Community Property 5/2007
Publication 556
html pdf Publication 556 (5/2008), Examination of Returns, Appeal Rights, and Claims for Refund 5/2008
Publication 557
html pdf Publication 557 (3/2005), Tax-Exempt Status for Your Organization 3/2005
Publication 559
html pdf Publication 559 (2007), Survivors, Executors, and Administrators 2007
Publication 560
html pdf Publication 560 (2007), Retirement Plans for Small Business 2007
Publication 561
html pdf Publication 561 (4/2007), Determining the Value of Donated Property 4/2007
Publication 564
html pdf Publication 564 (2007), Mutual Fund Distributions 2007
Publication 570
html pdf Publication 570 (2007), Tax Guide for Individuals With Income From U.S. Possessions 2007
Publication 571
html pdf Publication 571 (3/2008), Tax-Sheltered Annuity Plans (403(b) Plans) 3/2008
Publication 575
html pdf Publication 575 (2007), Pension and Annuity Income 2007
Publicación 579(SP)
html pdf Publicación 579(SP) (2007), Cómo Preparar la Declaración de Impuesto Federal 2007
Publication 583
html pdf Publication 583 (1/2007), Starting a Business and Keeping Records 1/2007
Publication 584
html pdf Publication 584 (12/2007), Casualty, Disaster, and Theft Loss Workbook 12/2007
Publication 584-B
html pdf Publication 584-B (12/2007), Business Casualty, Disaster, and Theft Loss Workbook 12/2007
Publicación 584SP
html pdf Publicación 584SP (4/2008), Registro de Pérdidas por Hechos Fortuitos (Imprevistos), Desastres y Robos (Propiedad de Uso Personal) 4/2008
Publication 587
html pdf Publication 587 (2007), Business Use of Your Home 2007
Publication 590
html pdf Publication 590 (2007), Individual Retirement Arrangements (IRAs) 2007
Publication 593
html pdf Publication 593 (01/2008), Tax Highlights for U.S. Citizens and Residents Going Abroad 01/2008
Publication 595
html pdf Publication 595 (2/2006), Capital Construction Fund for Commercial Fishermen 2/2006
Publication 596
html pdf Publication 596 (2007), Earned Income Credit (EIC) 2007
Publicación 596SP
html pdf Publicación 596SP (2007), Crédito por Ingreso del Trabajo 2007
Publication 597
html pdf Publication 597 (2/2006), Information on the United States-Canada Income Tax Treaty 2/2006
Publication 598
html pdf Publication 598 (11/2007), Tax on Unrelated Business Income of Exempt Organizations 11/2007
Publication 600
html pdf Publication 600 (2006), State and Local General Sales Taxes 2006
Publication 721
html pdf Publication 721 (2007), Tax Guide to U.S. Civil Service Retirement Benefits 2007
Publicación 850
html pdf Publicación 850 (12/2003), English-Spanish Glossary of Words and Phrases 12/2003
Publication 901
html pdf Publication 901 (4/2008), U.S. Tax Treaties 4/2008
Publication 907
html pdf Publication 907 (2007), Tax Highlights for Persons with Disabilities 2007
Publication 908
html pdf Publication 908 (7/1996), Bankruptcy Tax Guide 7/1996
Publication 915
html pdf Publication 915 (2007), Social Security and Equivalent Railroad Retirement Benefits 2007
Publication 919
html pdf Publication 919 (2008), How Do I Adjust My Tax Withholding? 2008
Publication 925
html pdf Publication 925 (2007), Passive Activity and At-Risk Rules 2007
Publication 926
html pdf Publication 926 (2008), Household Employer's Tax Guide 2008
Publication 929
html pdf Publication 929 (2007), Tax Rules for Children and Dependents 2007
Publication 936
html pdf Publication 936 (2007), Home Mortgage Interest Deduction 2007
Publication 938
html pdf Publication 938 (02/2008), Real Estate Mortgage Investment Conduits (REMICs) Reporting Information 02/2008
Publication 939
html pdf Publication 939 (04/2003), General Rule for Pensions and Annuities 04/2003
Publication 946
html pdf Publication 946 (2007), How To Depreciate Property 2007
Publication 947
html pdf Publication 947 (5/2004), Practice Before the IRS and Power of Attorney 5/2004
Publication 950
html pdf Publication 950 (8/2007), Introduction to Estate and Gift Taxes 8/2007
Publication 954
html pdf Publication 954 (1/2004), Tax Incentives for Distressed Communities 1/2004
Publication 957
html pdf Publication 957 (6/2005), Reporting Back Pay and Special Wage Payments to the Social Security Administration 6/2005
Publication 967
html pdf Publication 967 (2007), The IRS Will Figure Your Tax 2007
Publication 969
html pdf Publication 969 (2007), Health Savings Accounts and Other Tax-Favored Health Plans 2007
Publication 970
html pdf Publication 970 (2007), Tax Benefits for Education 2007
Publication 971
html pdf Publication 971 (4/2008), Innocent Spouse Relief 4/2008
Publication 972
html pdf Publication 972 (2007), Child Tax Credit 2007
Publication 1212
html pdf Publication 1212 (12/2006), Guide to Original Issue Discount (OID) Instruments 12/2006
Publication 1542
html pdf Publication 1542 (3/2008), Per Diem Rates 3/2008
Publication 1544
html pdf Publication 1544 (6/2007), Reporting Cash Payments of Over $10,000 6/2007
Publicación 1544(SP)
html pdf Publicación 1544(SP) (6/2007), Informe de Pagos en Efectivo en Exceso de $10,000 6/2007
Publication 3920
html pdf Publication 3920 (2/2002), Tax Relief for Victims of Terrorist Attacks 2/2002
Publication 3991
html pdf Publication 3991 (5/2002), Highlights of the Job Creation and Worker Assistance Act of 2002 5/2002
Publication 4492
html pdf Publication 4492 (1/2006), Information for Taxpayers Affected by Hurricanes Katrina, Rita, and Wilma 1/2006
Publicación 4492(SP)
html pdf Publicación 4492(SP) (3/2006), Información para los Contribuyentes Afectados por los Huracanes Katrina, Rita y Wilma 3/2006
Publication 4655
html pdf Publication 4655 (1/2008), Supplemental Instructions for 2007 Form 1040 and Form 1040NR 1/2008
Publication 4681
html pdf Publication 4681 (2007), Canceled Debts, Foreclosures, Repossessions, and Abandonments 2007
Source: http://www.irs.gov/publications/index.html