National Directory of Nonprofit Organizations (NDNO) provides names, addresses, and annual income figures of more than 260,000 organizations, 181,000+ of which have incomes in excess of $100,000. In addition, phone numbers are provided for 99.9% of listees in the print version. Entries in both volumes cover all twenty-two of the U.S. Internal Revenue Service 501(c) subsections, as well as IRS sections 501(e), 501(k), and 4947(a)(2), as provided for in the 1954 Internal Revenue Code.