Published by The Legal Intelligencer, and in cooperation with the Pennsylvania Institute of Certified Public Accountants, the Pennsylvania Tax Handbook is a reference tool no tax professional in the commonwealth should be without. For 175 years, The Legal Intelligencer has been the expert source of legal information for professionals in Philadelphia, its suburbs and the state of Pennsylvania. Pennsylvania Accountants, Tax Attorneys, and other Tax Professionals: As you gear up for the tax season, make sure the state's top tax book is in your hands!