Exhibit 16 POWER OF ATTORNEY We, the undersigned Trustees of Allmerica Investment Trust, hereby severally constitute and appoint John P. Kavanaugh, Joseph W. MacDougall, Jr., George M. Boyd, Gregory D. Sheehan and Paul T. Kane as his or her true and lawful attorneys, with full power to each of them individually, with full power of substitution to each, to sign for us, and in our name and in the capacities indicated below, any and all amendments (including post-effective amendments) to the Registration Statement of Allmerica Investment Trust on Form N-14 and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto each of said attorneys full power and authority to do and perform each and every act and thing requisite or necessary to be done in the premises, as fully to all intents and purposes as said attorney might or could do in person, hereby ratifying and confirming all that said attorney lawfully could do or cause to be done by virtue hereof. Name Capacity Date ---- -------- ---- /s/ JOHN P. KAVANAUGH President (Chief Executive January 7, 2003 - ------------------------- Officer), Chairman of the John P. Kavanaugh Board and Trustee /s/ PAUL T. KANE Treasurer (Principal January 7, 2003 - ------------------------- Accounting Officer, Principal Paul T. Kane Financial Officer) /s/ P. KEVIN CONDRON Trustee January 7, 2003 - ------------------------- P. Kevin Condron /s/ JOCELYN S. DAVIS Trustee January 7, 2003 - ------------------------- Jocelyn S. Davis /s/ CYNTHIA A. HARGADON Trustee January 7, 2003 - ------------------------- Cynthia A. Hargadon /s/ T. BRITTON HARRIS, IV Trustee January 7, 2003 - ------------------------- T. Britton Harris, IV Name Capacity Date ---- -------- ---- /s/ GORDON HOLMES Trustee January 7, 2003 - ------------------------- Gordon Holmes /s/ MARK A. HUG Trustee January 7, 2003 - ------------------------- Mark A. Hug /s/ ATTIAT F. OTT Trustee January 7, 2003 - ------------------------- Attiat F. Ott /s/ RANNE P. WARNER Trustee January 7, 2003 - ------------------------- Ranne P. Warner