Section 906 Certifications
I, Charles E. Porter, the Principal Executive Officer of the Funds listed on Attachment A, certify that, to my knowledge:
1. The form N-CSR of the Funds listed on Attachment A for the period ended January 31, 2009 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 Form N-CSR of the Funds listed on Attachment A for the period ended January 31, 2009 fairly presents, in all material respects, the financial condition and results of operations of the Funds listed on Attachment A.
Date: March 30, 2009
/s/ Charles E. Porter
______________________
Charles E. Porter
Principal Executive Officer
Section 906 Certifications
I, Steven D. Krichmar, the Principal Financial Officer of the Funds listed on Attachment A, certify that, to my knowledge:
1. The form N-CSR of the Funds listed on Attachment A for the period ended January 31, 2009 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 Form N-CSR of the Funds listed on Attachment A for the period ended January 31, 2009 fairly presents, in all material respects, the financial condition and results of operations of the Funds listed on Attachment A.
Date: March 30, 2009
/s/ Steven D. Krichmar
______________________
Steven D. Krichmar
Principal Financial Officer
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| Attachment A | |
| N-CSR | |
| Period (s) ended January 31, 2009 | |
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| Putnam Premier Income Trust |
| Putnam Research Fund |
| Putnam Investors Fund |
| Putnam Voyager Fund |
| Putnam Vista Fund |
| Putnam Tax Free High Yield Fund |
| Putnam AMT-Free Insured Municipal Fund |
| Putnam Growth Opportunities Fund |
| The George Putnam Fund of Boston |
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| Putnam RetirementReady – Funds |
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| Putnam RetirementReady -- 2050 |
| Putnam RetirementReady -- 2045 |
| Putnam RetirementReady -- 2040 |
| Putnam RetirementReady -- 2035 |
| Putnam RetirementReady -- 2030 |
| Putnam RetirementReady -- 2025 |
| Putnam RetirementReady -- 2020 |
| Putnam RetirementReady -- 2015 |
| Putnam RetirementReady -- 2010 |
| Putnam RetirementReady -- Maturity Fund |
