The 2003 Cumulative Supplement (ISBN: 0-471-25012-0) includes new information on: IRS Information letters Electronic filing of Form 990 IRS private letter rulings and technical advice memorandums Guidance on Internet activities Intermediate sanctions 1023/1024 forms The supplement updates the core volume, Blazek/Tax Planning and Compliance for Tax-Exempt Organizations, Third Edition (ISBN: 0-471-29380-6).