Exhibit 32.2
CERTIFICATION PURSUANT TO
SECTION 1350, CHAPTER 63 OF TITLE 18
OF THE UNITED STATES CODE,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
In connection with the Quarterly Report of R.R. Donnelley & Sons Company (the “Company”) on Form 10-Q for the period ending June 30, 2003 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Gregory A. Stoklosa, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, that:
| (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 result of operations of the Company. |
/s/ Gregory A. Stoklosa
Gregory A. Stoklosa
Chief Financial Officer
August 11, 2003