EXHIBIT 99.1

                            CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

          In connection with the Quarterly Report on Form 10-Q of R.H. Donnelley
Corporation (the "Company") for the period ending June 30, 2002 as filed with
the Securities and Exchange Commission on the date hereof (the "Report"), the
undersigned hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted
pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to such
officer's knowledge:

          (1) The Report fully complies with the requirements of Section 13(a)
or 15(d) of the Securities Exchange Act of 1934; and

          (2) The information contained in the Report fairly presents, in all
material respects, the financial condition and results of operations of the
Company as of the dates and for the periods expressed in the Report.


/s/ David C. Swanson


David C. Swanson
Chief Executive Officer
August 14, 2002