CERTIFICATION
I, Michael W. Stockton, certify that:
1.   I have reviewed this report on Form N-CSR of Washington Mutual Investors
     Fund, Inc.;

2.   Based on my knowledge, this report does not contain any untrue statement of
     a material fact or omit to state a material fact necessary to make the
     statements made, in light of the circumstances under which such statements
     were made, not misleading with respect to the period covered by this
     report;

3.   Based on my knowledge, the financial statements, and other financial
     information included in this report, fairly present in all material
     respects the financial condition, results of operations, changes in net
     assets, and cash flows (if the financial statements are required to include
     a statement of cash flows) of the registrant as of, and for, the periods
     presented in this report;

4.   The registrant's other certifying officer(s) and I are responsible for
     establishing and maintaining disclosure controls and procedures (as defined
     in Rule 30a-3(c) under the Investment Company Act of 1940) and internal
     control over financial reporting (as defined in Rule 30a-3(d) under the
     Investment Company Act of 1940) for the registrant and have:

     (a) Designed such disclosure controls and procedures, or caused such
     disclosure controls and procedures to be designed under our supervision, to
     ensure that material information relating to the registrant, including its
     consolidated subsidiaries, is made known to us by others within those
     entities, particularly during the period in which this report is being
     prepared;

     (b) Designed such internal control over financial reporting, or caused such
     internal control over financial reporting to be designed under our
     supervision, to provide reasonable assurance regarding the reliability of
     financial reporting and the preparation of financial statements for
     external purposes in accordance with generally accepted accounting
     principles;

     (c) Evaluated the effectiveness of the registrant's disclosure controls and
     procedures and presented in this report our conclusions about the
     effectiveness of the disclosure controls and procedures, as of a date
     within 90 days prior to the filing date of this report based on such
     evaluation; and

     (d) Disclosed in this report any change in the registrant's internal
     control over financial reporting that occurred during the registrant's most
     recent fiscal half-year (the registrant's second fiscal half-year in the
     case of an annual report) that has materially affected, or is reasonably
     likely to materially affect, the registrant's internal control over
     financial reporting; and

5.   The registrant's other certifying officer(s) and I have disclosed to the
     registrant's auditors and the audit committee of the registrant's board of
     directors (or persons performing the equivalent functions):

     (a) All significant deficiencies and material weaknesses in the design or
     operation of internal control over financial reporting which are reasonably
     likely to adversely affect the registrant's ability to record, process,
     summarize, and report financial information; and

     (b) Any fraud, whether or not material, that involves management or other
     employees who have a significant role in the registrant's internal control
     over financial reporting.

Date: June 28, 2005                  /s/ Michael W. Stockton, Vice President,
                                     Treasurer and PFO
                                     Washington Mutual Investors Fund, Inc.










EX-99.906CERT



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



JEFFREY L. STEELE,  President and PEO, and Michael W.  Stockton,  Vice President
and Treasurer of Washington Mutual Investors Fund, Inc. (the "Registrant"), each
certify to the best of his or her knowledge that:

1)       The Registrant's periodic report on Form N-CSR for the period ended
         April 30, 2005 (the "Form N-CSR") fully complies with the requirements
         of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as
         amended; and

2)       The information contained in the Form N-CSR fairly presents, in all
         material respects, the financial condition and results of operations of
         the Registrant.


Chief Executive Officer                     Chief Financial Officer

WASHINGTON MUTUAL                           WASHINGTON MUTUAL
INVESTORS FUND, INC.                        INVESTORS FUND, INC.

/s/ Jeffrey L. Steele, President            /s/ Michael W. Stockton, Vice
And Principal Executive Officer                 Treasurer and
                                                Principal Financial Officer
Date:  June 28, 2005                            Date: June 28, 2005


A signed original of this written statement required by Section 906 of the
Sarbanes-Oxley Act of 2002 has been provided to WASHINGTON MUTUAL INVESTORS
FUND, INC. and will be retained by WASHINGTON MUTUAL INVESTORS FUND, INC. and
furnished to the Securities and Exchange Commission (the "Commission") or its
staff upon request.

This certification is being furnished to the Commission solely pursuant to 18
U.S.C. Section 1350 and is not being filed as part of the Form N-CSR filed with
the Commission.