The Supplement provides updated entries for hundreds of foundations in the Directory and Directory Part 2. Changes in foundation financial data, contact information, and giving interests are reflected in the Supplement.

The manager of bibliographic services at the Foundation Center assembles actual grant proposals that have garnered money for nonprofit organizations, as a guide for newcomers to grant writing, presenting them in sections on special single-year and multi-year projects, endowment, building or renovation, general and operating support, seed money, and planning grant, and also providing examples of letters of inquiry, cover letters, and budgets.